Written by the MedLinket Clinical Engineering Team · Last updated: July 2025 · Estimated reading time: 9 minutes
⚡ Quick Answer To identify the correct cables for your patient monitor, you need five pieces of information: (1) monitor brand, (2) monitor model number, (3) cable type (ECG, SpO2, NIBP, Temp, IBP), (4) lead count and end-type for ECG, and (5) the OEM part number of the existing cable. If the part number is worn off, a clear photo of the monitor-side connector — showing pin layout, shape, and size — is the fastest way for a supplier to identify the correct replacement.
🔑 Key Takeaways
-
Patient monitor cables are NOT universal — even between models from the same brand, connectors can differ.
-
The most common ordering mistake is matching only the brand while ignoring the specific model and connector generation.
-
SpO2 cables have a hidden compatibility layer: the signal technology (Masimo, Nellcor, proprietary) must match, not just the physical connector.
-
Two-piece ECG systems (trunk cable + separate leadwires) are more cost-effective long-term than one-piece cables.
-
When in doubt, photograph the connector and send it to the supplier — MedLinket offers free identification within 2 hours.
Time to Identify 2–5 minutes
Difficulty Beginner
Tools Needed Phone camera
Applies To All brands
You need a replacement ECG cable. Or the SpO2 sensor has died. Or the NIBP hose is cracked. You know the cable type — but which exact one fits your monitor? With over 30 major patient monitor brands on the market, each using proprietary connectors across multiple model generations, ordering the wrong cable is one of the most common (and expensive) mistakes in hospital procurement.
This guide gives you a systematic 5-step method to identify any cable for any monitor, followed by brand-specific connector references for the most common brands. No more guessing, no more returns.
This article is part of our Hospital Monitor Reading & Accessories Guide series. For a complete overview of all accessory types, see our Patient Monitor Accessories Guide by Parameter Type.
The 5-Step Cable Identification Method
STEP 1
Record the Monitor Brand and Model Number
This is the single most important piece of information. The model number (not just the brand) determines the connector type, because manufacturers often change connectors between model generations.
Where to find it: Look for a label on the back or bottom of the monitor. It typically shows the manufacturer name, model/part number, serial number, and regulatory markings. Examples of model numbers: Philips IntelliVue MX800, Mindray BeneVision N22, GE CARESCAPE B650, Dräger Infinity Delta, Nihon Kohden BSM-6301.
⚠️ Common Mistake: Many hospitals call their monitors simply "the Philips" or "the Mindray." But Philips alone makes dozens of models with at least four different ECG connector types. "Philips MX800" narrows it to one specific connector. Always get the full model number.
STEP 2
Identify the Cable Type You Need
Determine which parameter the cable serves. Each parameter port on the monitor is labeled and color-coded:
| Port Label | Cable Type | What It Connects |
|---|---|---|
| ECG | ECG trunk cable + leadwires | Monitor → electrodes on patient's chest/limbs |
| SpO2 | SpO2 sensor + adapter cable | Monitor → finger/ear/toe sensor |
| NIBP | NIBP hose + cuff | Monitor → blood pressure cuff on patient's arm |
| Temp / T1 / T2 | Temperature probe | Monitor → skin/esophageal/rectal probe on patient |
| IBP / P1 / P2 | IBP adapter cable + transducer | Monitor → arterial pressure transducer |
| CO2 / EtCO2 | EtCO2 sampling line + water trap | Monitor/module → patient airway |
If you're unsure which port is which, check the icons printed next to each port on the monitor's side or rear panel. Most monitors use standardized icons (a heart for ECG, a finger for SpO2, an arm cuff for NIBP).
STEP 3
Find the OEM Part Number
The OEM part number is the fastest path to identifying the exact replacement. Here's where to look:
📍 4 Places to Find the OEM Part Number
1. On the cable itself — Most cables have the part number printed or molded into the connector housing. Look near the monitor-end plug. Example: "Philips M1668A" or "Mindray EL6305A."
2. Original packaging — If you still have the box or bag, the part number is on the label.
3. Monitor user manual — Look in the "Accessories" or "Ordering Information" appendix. Most manuals list every compatible cable with part numbers. This is also available as a PDF on the manufacturer's website.
4. CMMS / equipment records — Your hospital's Computerized Maintenance Management System (or Biomed department) should have records of all accessories associated with each device, including part numbers from past purchases.
💡 Part Number Worn Off? This is extremely common on heavily used cables. Skip to Step 4 — the connector itself tells the story.
STEP 4
Photograph the Monitor-Side Connector
If the part number is unavailable, a clear photo of the connector is the next best identification tool. Here's what to capture:
| Photo | What It Shows | Why It Matters |
|---|---|---|
| Connector face (head-on) | Pin layout, pin count, shape | Identifies the exact connector generation. A 12-pin round connector from Philips is completely different from a 12-pin round connector from Mindray. |
| Connector profile (side view) | Locking mechanism, overall size | Distinguishes between push-fit, twist-lock, and latch mechanisms used by different brands. |
| Any text on the connector | Part numbers, brand logos, pin labels | Often the most direct identification clue. |
| The monitor port (empty) | Port shape, color, label | Confirms which parameter the cable serves and the socket configuration. |
Send these photos to your supplier or Biomed department. An experienced accessory manufacturer like MedLinket can typically identify the correct cable within 2 hours from photos alone.
STEP 5
Specify the Remaining Details (ECG-Specific)
For ECG cables, you need three additional specifications beyond the connector type:
| Specification | Options | How to Determine |
|---|---|---|
| Lead count | 3-lead, 5-lead, 10/12-lead | Count the number of individual wires going to the patient. 3 = basic rhythm; 5 = standard monitoring; 10+ = diagnostic. See our ECG placement guide for details. |
| Electrode end type | Snap or Grabber (Pinch/Clip) | Snap = round metal button that clicks onto the electrode stud. Grabber (pinch/clip) = spring-loaded jaw that clamps onto the electrode tab. Choose based on your electrode type. |
| Color standard | AHA (US) or IEC (European) | AHA: White (RA), Black (LA), Green (RL), Red (LL), Brown (V). IEC: Red (R), Yellow (L), Black (N), Green (F), White (C). US hospitals typically use AHA; European and Asian hospitals vary. |
For SpO2, also specify: sensor type (finger clip, soft silicone, disposable adhesive, ear clip, neonate wrap) and patient population (adult, pediatric, infant, neonate).
For NIBP, also specify: cuff size (neonatal, infant, child, small adult, adult, large adult, thigh) and connector type. See our cuff sizing guide.
Brand-Specific Connector Quick Reference
Here's a reference guide for the most commonly used monitor brands, showing the key connector characteristics for each cable type. This helps you narrow down the exact cable even without a part number.
ECG Trunk Cable Connectors by Brand
| Brand | Common Models | ECG Connector Type | MedLinket Examples |
|---|---|---|---|
| Philips | IntelliVue MX series, MP series, CMS, VM series | 12-pin round connector (most models); 8-pin for older models | Philips 3-lead leadwires |
| Mindray | BeneVision N series, iMEC, uMEC, BeneView T series, PM series | 6-pin or 12-pin round connector (varies by generation) | Mindray 3-lead cable · 5-lead cable |
| GE Healthcare | CARESCAPE B-series, Dash, Solar, DINAMAP, Pro series | 11-pin connector (Multi-Link); older models use different pin counts | GE compatible ECG cables |
| Dräger | Infinity Delta, Gamma, Vista, M-series | Proprietary multi-pin connector (MS series) | Dräger compatible ECG cables |
| Nihon Kohden | BSM series, Life Scope series | Proprietary connector (K series) | Nihon Kohden compatible cables |
| Comen | C-series, Star-series | Round connector (varies by model series) | Comen compatible cables |
| Edan | iM-series, M-series | 6-pin or proprietary connector | Edan compatible cables |
SpO2 Connector Quick Reference
| Brand / Technology | Common Connector | Critical Note | MedLinket Range |
|---|---|---|---|
| Masimo SET | 14-pin connector (LNCS) | Uses rainbow SET algorithm. Sensors are NOT interchangeable with Nellcor. | Masimo adapter cable · Compatibility guide |
| Nellcor OxiMax | 9-pin D-sub connector (OxiMax); 7-pin for older | OxiMax digital protocol ≠ older Nellcor analog. Verify generation. | Nellcor compatible sensors |
| Philips | 8-pin or 12-pin round (depending on module) | Some Philips monitors accept Masimo or Nellcor modules — check which SpO2 module is installed. | Philips SpO2 range |
| Mindray | 6-pin, 7-pin, or 8-pin (varies by model) | Mindray proprietary algorithm. Some newer models use Masimo module. | Mindray SpO2 sensor |
| GE TruSignal | 11-pin connector (TruSignal); older models use Nellcor | TruSignal = GE proprietary. Older DASH monitors may use Nellcor OxiMax. | GE SpO2 range |
| Biolight | Proprietary connector | Biolight uses its own SpO2 algorithm. | Biolight SpO2 sensor |
🛑 The SpO2 "Phantom Fit" Warning: Some SpO2 connectors from different brands are physically similar enough that they can be forced into the wrong port. This is dangerous: it can produce falsely normal readings, leading to missed clinical deterioration. Always verify both the physical connector AND the technology protocol (Masimo, Nellcor, proprietary). If the monitor displays an SpO2 value but the pleth waveform is absent or irregular, suspect a protocol mismatch. Learn more in our SpO2 technology guide.
NIBP Hose Connectors
NIBP hoses have two connection points: the monitor-end connector (brand-specific) and the cuff-end connector (can be standardized or brand-specific). Common monitor-end connectors include single-tube and dual-tube configurations with bayonet, twist-lock, or push-fit mechanisms.
For Philips monitors specifically, see our detailed guide: How to Quickly Find NIBP Hoses for Philips Monitor Series.
One-Piece vs. Two-Piece ECG Cable Systems
When ordering ECG cables, one of the first decisions is whether to use a one-piece or two-piece system. This affects cost, convenience, and maintenance.
| Feature | One-Piece Cable | Two-Piece System (Trunk + Leadwires) |
|---|---|---|
| Design | Single cable from monitor to electrodes | Trunk cable (monitor to yoke) + separate leadwires (yoke to electrodes) |
| Cost per unit | Lower initial purchase price | Higher initial price (two components), but lower long-term cost |
| When a leadwire breaks | Replace the entire cable | Replace only the damaged leadwire set (~40% of full cable cost) |
| Connection points | Fewer (less chance of loose connections) | One additional junction point (the yoke) |
| Best for | Transport, ambulances, short-term monitoring, facilities wanting simplicity | ICU, long-term monitoring, cost-sensitive facilities, high-volume units |
| MedLinket options | Mindray 3-lead one-piece | Trunk cables + Leadwires |
💡 Cost Calculation: In a typical ICU with 20 beds, switching from one-piece to two-piece ECG systems saves approximately 30–40% in annual cable replacement costs, because leadwires (which wear out 3–4× faster than trunk cables) can be replaced independently. The trunk cable, which accounts for ~60% of the cable cost, lasts 2–3 years under normal use.
The "Photo ID" Shortcut: When You Can't Find Any Information
Sometimes you've inherited a fleet of monitors with no documentation, worn-off labels, and no Biomed department on-site. Here's the fastest resolution path:
Can't identify the cable? Use the PHOTO ID method: 1. Take 3 photos: □ Monitor nameplate (back/bottom label) □ Empty port on the monitor (close-up) □ Old cable connector face (if available) 2. Send photos to your supplier with: □ Country (for AHA vs IEC color standard) □ Cable type needed (ECG, SpO2, NIBP, etc.) □ Lead count for ECG (3, 5, or 12) □ Electrode end type (snap or grabber) 3. Wait for confirmation: □ MedLinket: response within 2 hours □ Includes: compatible part number, photo match □ Free sample available for verification → Email: shopify@medlinket.com → WhatsApp: +852 6467 3105
This approach works because MedLinket's product database covers 30+ monitor brands and 16,651+ product variants. Our engineering team has catalogued connector photographs for virtually every monitor model in clinical use today. In most cases, a clear connector photo is all we need to confirm the exact compatible replacement.
Common Identification Mistakes (and How to Avoid Them)
| Mistake | What Goes Wrong | How to Avoid It |
|---|---|---|
| Ordering by brand only ("I need a Philips ECG cable") | Philips has 4+ different ECG connector types. You'll likely get the wrong one. | Always include the model number (e.g., "Philips IntelliVue MX800"). |
| Assuming "same brand = same cable" | Even within Mindray, the BeneVision N-series uses a different connector than the older PM series. | Verify by model number, not brand alone. |
| Ignoring SpO2 technology type | Sensor physically connects but produces inaccurate readings or "Sensor Error." | Confirm which SpO2 module is installed (Masimo, Nellcor, or proprietary). Check the monitor menu under SpO2 settings or the module label. |
| Mixing AHA and IEC color coding | Leadwires have correct connector but wrong colors, causing placement confusion. | Specify AHA (US standard) or IEC (European standard) when ordering. See color coding reference. |
| Wrong electrode end type | Snap leadwires won't connect to grabber-style electrodes (and vice versa). | Check your electrode stock before ordering. Snap = round stud. Grabber = flat tab. |
| Ordering 3-lead when you need 5-lead | Losing the precordial (chest) lead means losing V-lead arrhythmia detection. | Check your clinical protocol. Most ICUs require 5-lead ECG; med-surg may use 3-lead. |
| Forgetting the adapter cable for SpO2 | New sensor arrives but doesn't reach the monitor — missing the intermediate cable. | Confirm whether you need a direct-connect sensor or a sensor + adapter/extension cable. |
Quick-Reference: What to Have Ready When Ordering
🏷️ Cable Ordering Checklist
For ALL cable types:
-
☐ Monitor brand
-
☐ Monitor model number
-
☐ OEM part number of existing cable (if available)
-
☐ Photos of connector (if part number unknown)
Additional for ECG cables:
-
☐ Lead count: 3, 5, or 12
-
☐ One-piece or two-piece (trunk + leadwires)
-
☐ Electrode end: Snap or Grabber
-
☐ Color standard: AHA or IEC
Additional for SpO2:
-
☐ SpO2 technology (Masimo / Nellcor / proprietary)
-
☐ Sensor type: finger clip, soft silicone, disposable, ear clip, neonate wrap
-
☐ Direct-connect or sensor + adapter cable
-
☐ Patient population: adult, pediatric, infant, neonate
Additional for NIBP:
-
☐ Cuff size (by limb circumference)
-
☐ Hose connector type (single-tube or dual-tube)
-
☐ Reusable or disposable cuff
MedLinket: Free Cable Identification for Any Monitor Brand
Can't figure out which cable you need? MedLinket offers free compatibility verification within 2 hours. Send us a photo of your connector or your monitor brand and model, and our engineering team will confirm the exact replacement from our library of 16,651+ product variants covering 30+ brands.
🏭 Own-Factory Manufacturing — 3 factories (Shenzhen, Shaoguan, Indonesia). Full vertical integration from R&D through 100% QC inspection. 3,500+ connector molds in-house.
📋 Regulatory Compliance — ISO 13485:2016, MDSAP, FDA 510(k) ×19, CE MDR ×48, NMPA, BSCI. Passed Mindray, Philips, and ANVISA on-site audits.
🔗 30+ Brand Compatibility — Philips, GE, Mindray, Masimo, Nellcor, Dräger, Nihon Kohden, Spacelabs, Comen, Biolight, Edan, and more. Pin-for-pin verified.
🛡️ Risk-Free Evaluation — Free samples for first-time testing. $5M product liability insurance. If the cable doesn't fit or perform, we replace it at no charge.
Frequently Asked Questions
Q: How do I find the part number for my patient monitor cable?
Check four places: (1) printed on the cable connector housing, (2) original packaging, (3) monitor user manual under "Accessories" or "Ordering Information," (4) hospital CMMS equipment records. If the printing is worn, photograph the connector and send it to your supplier.
Q: Can I use a Philips ECG cable on a Mindray monitor?
No. Philips and Mindray use different connector types, pin configurations, and signal protocols. An ECG cable must match your exact monitor brand and model. Cross-brand cables will not physically fit and could damage the port if forced.
Q: What information do I need to order the correct replacement cable?
Five essentials: (1) monitor brand, (2) model number, (3) cable type (ECG, SpO2, NIBP, etc.), (4) lead count and electrode end type for ECG, (5) OEM part number if available. For SpO2, also specify the technology type (Masimo, Nellcor, or proprietary).
Q: Why does my SpO2 sensor physically fit but give wrong readings?
SpO2 compatibility has two layers: physical connector and signal protocol. Some connectors from different brands are physically similar but use incompatible algorithms. Always verify both the connector type AND the SpO2 technology (Masimo SET, Nellcor OxiMax, proprietary).
Q: What is the difference between a one-piece ECG cable and a trunk cable with separate leadwires?
A one-piece cable runs from monitor to electrodes in one unit. A two-piece system separates the trunk cable (monitor to yoke, lasts 2–3 years) from the leadwires (yoke to electrodes, lasts 6–12 months). Two-piece saves ~30–40% on annual replacements because you only replace the worn leadwires, not the entire cable.
Not Sure Which Cable You Need?
Send us a photo of your monitor nameplate and cable connector — we'll identify the exact compatible replacement within 2 hours. Free samples available.
📚 This article is part of the Hospital Monitor Reading & Accessories Guide series
Explore related articles:
Accessories & Compatibility:
→ Patient Monitor Accessories: Complete Guide by Parameter Type → Compatible Masimo SpO2 Sensors for Multi-Brand Monitors → Understanding SpO2 Sensors: Masimo, Nellcor, and Neonatal Options → How to Choose a Suitable Blood Pressure Cuff → How to Find NIBP Hoses for Philips Monitor Series → How to Choose the Right Disposable SpO2 Sensors
ECG Guides:
→ Master 3-Lead, 5-Lead, 12-Lead ECG Placement → ECG Lead Placement Mistakes to Avoid → ECG Artifact Troubleshooting → 12-Lead ECG Placement: Complete Guide
Troubleshooting:
→ Patient Monitor Not Turning On: What to Check → When to Call Biomed vs. Troubleshoot Yourself → ECG Quality Control System
Understanding Parameters:
→ How to Read a Hospital Monitor (Pillar Page) → How to Read an EKG Quickly → What Is a Pulse Oximeter and How Does It Work?
