MPO-12 to MPO-12 8-Fiber Female APC OM4 Type B Fiber Patch Cable, 30m
The M12FOM4-B2-30 is a 30m MPO-12 to MPO-12 OM4 multimode fiber patch cable engineered for direct connection of 400G and 800G parallel-optic transceivers in AI data center fabrics. The 8-fiber construction (positions 1-4 and 9-12 active) with female-female MPO-12 APC connectors and Type B polarity is the correct configuration for Vitex VR4, VR8, SR4, and SR8 transceivers, all of which use male (pinned) MPO ports.
Built with bend-insensitive OM4 glass and a 3.0mm low-smoke zero-halogen (LSZH) jacket for safe routing in plenum-adjacent environments. Each cable is 100% factory-tested for insertion loss and return loss per IEC 61300-3-4 before dispatch.
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- Features
- Specifications
- Applications
- FAQs
- Datasheet
- MPO-12 to MPO-12 (female-female APC) terminations on both ends
- 8-fiber polarity Type B configuration (correct for parallel optics)
- Bend-insensitive OM4 multimode fiber (aqua jacket)
- 3.0mm low-smoke zero-halogen (LSZH) outer jacket
- 30m length
- Compatible with 400G-VR4, 800G-VR8, 800G-SR8 transceivers (all Vitex VQ, VO, VD, VR series)
- Insertion loss: <0.35 dB per connector, typical
- Return loss: >60 dB APC
- 100% factory-tested per IEC 61300-3-4
- Compliant with TIA-568.3-D, IEC 61753, IEC 61300
- RoHS 2 and REACH compliant
- US-based engineering support from New Jersey HQ
| Category | Fiber Patch Cable |
|---|---|
| Form Factor | MPO-12 to MPO-12 |
| Fiber Count | 8-fiber active (positions 1-4 and 9-12) |
| Fiber Type | OM4 multimode (bend-insensitive) |
| Operating Wavelength | 850 nm / 1300 nm |
| Connector | MPO-12 APC Female (both ends) |
| Polarity | Type B (reversed) |
| Insertion Loss | <0.35 dB typical per connector |
| Return Loss | >60 dB APC |
| Jacket | 3.0mm LSZH |
| Cable Length | 30m |
| Bend Radius (long-term) | 30mm minimum |
| Temperature | Commercial (0 to 70 degC operating) |
| Compliance | TIA-568.3-D, IEC 61753, RoHS 2 |
Q: What polarity is this cable and why does it matter?
A: Type B (reversed). The 12 fiber positions invert end-to-end, so position 1 at one end maps to position 12 at the other. Type B is the correct polarity for parallel optics like 400G-VR4 and 800G-VR8/SR8 because it maps each transmitter to the corresponding receiver on the other side. Using Type A on parallel optics will result in no link.
Q: Why are the connectors female (unpinned)?
A: Vitex parallel-optic transceivers (VR4, VR8, SR8, DR4, DR8) have male (pinned) MPO ports. Cables must therefore be female (unpinned) on both ends so the pins from the transceivers align the ferrules at mating. Female-to-male is required - you cannot mate two male or two female MPO connectors.
Q: Is this OM4 or OM5?
A: OM4. OM4 supports 50m at 800G-VR8 / 400G-VR4 (850 nm) and 100m at 800G-SR8 / 400G-SR4 - the predominant choice in current AI data centers. OM5 (wideband multimode) is targeted at SWDM applications and is not required for the Vitex parallel-optic portfolio.
Q: Which Vitex transceivers is this compatible with?
A: All Vitex parallel-optic multimode transceivers: VO-8CVR8CM-AA (800G OSFP VR8), VQ-4CVR4CP-AA (400G QSFP112 VR4), VR-4CVR4CP-AA (400G OSFP-RHS VR4), and any third-party transceiver with an MPO-12 APC port at 400G-VR4 / SR4 or 800G-VR8 / SR8.
Q: How should I clean MPO connectors?
A: Always clean both endfaces before mating. Use a dry-cleaning pen designed for MPO (e.g. Cassidy MPO cleaner or equivalent). Each click of the pen cleans one ferrule. Visually inspect with an MPO inspection scope if available. Dirt is the leading cause of high insertion loss and link errors in parallel optics.
Q: Are custom lengths available?
A: Yes. Standard online lengths are 10m, 30m, 50m. Custom lengths from 1m to 100m available on request. Plenum (CMP) jacketing also available on request. Contact Vitex engineering for quotes.
Q: How does Vitex pricing compare to Corning, Panduit, or Belden?
A: Significantly more cost-effective than premium structured cabling brands for equivalent performance and certifications, with. Each cable is 100% factory-tested per IEC 61300-3-4.
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