Good Connections OM4 Multimode Fiber Patch Cable, SC/UPC to SC/UPC, Duplex, 10 m
OM4 · 50/125 µmSC/UPC ↔ SC/UPCDuplex10 m
The Good Connections LW-810SC4 is a 10 m duplex OM4 multimode fibre patch cable with SC/UPC connectors on both ends, made for short-reach 850 nm links between switches, servers, storage and patch panels.
The cable uses an LSZH jacket with a 3.0 mm outer diameter in violet, the usual colour for OM4, so it is easy to tell apart in a busy rack. The duplex clip can be removed to swap polarity (A/B) on site, so a crossed link can be corrected without a new cable. Every cable is tested after assembly and ships with its own measurement report.
Before you order: OM4 multimode works with 850 nm short-reach (SR/SX) multimode optics only. Singlemode LR/LX transceivers will not work on this cable. Check that both ports are SC.
What's in the Box
- 1 × Good Connections OM4 duplex fibre patch cable, 10 m, SC/UPC – SC/UPC
- Dust caps fitted on every connector
- Individual test report for this cable
- Transceivers, couplers and patch panels are not included
What It Means in Practice
- Two fibres in one cable: one transmits, one receives — the normal setup for SFP, SFP+, SFP28 and most media converters.
- At 10 m it reaches between neighbouring racks or across a server room; for building backbones use installation cable and patch panels instead.
- OM4 is laser-optimised 50/125 µm multimode for 850 nm SR optics (10GBASE-SR, 25GBASE-SR, 8/16/32G FC SW).
- Respect the minimum bend radius (7.5 mm): route the cable in gentle loops and do not pinch it in rack doors or cable ties.
- Keep the connectors covered until the moment of connection and clean the end-faces if a link shows high loss — dirt is the most common cause.
What Will Not Work
- Singlemode LR/LX/ER transceivers (1310/1550 nm) — they need OS2 singlemode cable.
- Ports of another connector type (LC, ST, MPO/MTP, E2000) without the right hybrid cable or adapter.
- Permanent in-wall or outdoor installation — this is a patch cable for racks, desks and equipment rooms.
Key Features
OM4 50/125 µm
Laser-optimised multimode for 850 nm SR optics.
SC/UPC – SC/UPC
Same connector on both ends.
LSZH jacket
Low-smoke, halogen-free jacket, 3.0 mm — suitable for offices and server rooms.
Swappable polarity
Remove the duplex clip to swap A/B on site.
Technical Specifications
| Identification |
| Part Number |
LW-810SC4 |
| EAN / GTIN |
4014619542697 |
| Brand |
Good Connections |
| Fibre |
| Fibre type |
OM4 multimode |
| Core / cladding |
50/125 µm |
| Fibres |
2 (duplex) |
| Connectors |
| End A |
SC duplex |
| End B |
SC duplex |
| Polish |
UPC |
| Polarity |
Swappable via removable duplex clip |
| Cable |
| Length |
10 m |
| Jacket |
LSZH |
| Outer diameter |
3.0 mm |
| Colour |
Violet |
| Optical & environmental |
| Minimum bend radius |
7.5 mm |
| Operating temperature |
-40 to +85 °C |
| Warranty |
| Warranty |
1-Year Warranty (Singular) |
| Manufacturer Term |
The manufacturer does not publish a warranty term for this cable — claims handled through Singular |
Frequently Asked Questions
The link does not come up — is the cable faulty?
Most often the polarity is crossed. Open the duplex clip and swap the two connectors at one end (A↔B), then try again.
Can I use OM4 with my existing OM3 cabling?
Yes, OM3, OM4 and OM5 are all 50/125 µm and mate with each other; the link performs to the level of the lowest grade in the path.
Which transceivers go with this cable?
Multimode 850 nm optics: for example 1000BASE-SX, 10GBASE-SR or 25GBASE-SR SFP modules, or 8/16/32G FC short-wave optics. Both ends must use the same standard.
Singular Expert Insight · Buyer's Guide
OM4 is the current standard for multimode SR links in racks and server rooms. Match three things before ordering: fibre type (OM4), connector at each end (SC/UPC / SC/UPC) and polish. Typical partners are
switches with SFP/SFP+ ports and the matching transceivers.
✓ Buy it if your ports are SC on both sides and the link is OM4.
✕ Skip it if your transceivers are singlemode LR/LX — order OS2 instead.
→ Also consider the same cable in other lengths.
Not sure which fibre or connector you have? Send us the model of your switch, transceiver or patch panel and we will check it before you order.