




Two 12-fiber MTP trunks in at the back on US Conec MTP-12 adaptors, 24 Corning singlemode fibers out as 12 LC duplex ports at the front, in one HD position. Factory terminated and tested, so a high-density link goes live by plugging in a trunk instead of splicing in the field.
The cassette uses the same 4.29 x 1.38 in front as our HD adaptor plates, so it mixes with plates and splice cassettes in any HD enclosure.

Rear MTP-12 adaptors.
MPC-24-LC-U (Method B / Universal) pairs the outer fibers: LC port 1 carries fibers 1 and 12, port 2 fibers 2 and 11, on to port 6 with fibers 6 and 7. Use it at both ends of a Type B MPO trunk with A-to-B LC cords at both ends. It is the usual choice for new builds, and the same Type B trunk also serves parallel-optic transceivers.
MPC-24-LC-A (Type A) runs straight through: fiber 1 to position 1, on to fiber 12. Use it with Type A trunks (one A-to-B and one A-to-A cord) or Type C trunks (A-to-B cords at both ends), for example to match existing Type A cassettes.
Not sure? Send us both ends of the link and we will specify the polarity.
| Method | Trunk | Cassettes | Patch Cords |
|---|---|---|---|
| B / Universal | Type B | MPC-24-LC-U both ends | A-to-B both ends |
| A | Type A | MPC-24-LC-A both ends | One A-to-B, one A-to-A |
| C | Type C | MPC-24-LC-A both ends | A-to-B both ends |
Every mated MPO pair is one pinned and one unpinned connector. The cassette rear ports are pinned, so the trunk legs that plug into them are unpinned.
MPO Trunk Cables| Fiber Count | 24 |
|---|---|
| Fiber | Corning OS2 9/125 µm singlemode, G.657.A1 bend-insensitive |
| Rear Connectors | 2x US Conec MTP-12 adaptors, male (pinned), APC |
| Front Connectors | 12x LC/UPC duplex adaptors, blue; zirconia ceramic sleeves |
| Polarity | Type A (MPC-24-LC-A) or Method B / Universal (MPC-24-LC-U) |
| Insertion Loss | MTP 0.35 dB max; LC 0.2 dB max |
| Return Loss | MTP 60 dB min; LC 50 dB min |
| Housing | Aluminum (5052) |
| Size (H x W x D) | 1.38 x 4.29 x 4.64 in [35 x 109 x 118 mm] |
| Temperature | 14 to 140 °F, operating and storage |
| Compliance | Build America, Buy America (BABA) compliant, self-certified. Compliance letter available on request. |
| Documentation | Test data and certificate of conformance available on request. |
| Enclosure | Type | Positions |
|---|---|---|
| HD1U | 1U rack | 4 |
| HD3U | 3U rack | 12 |
| HD Slim 1U | 1U rack, shallow | 4 |
| WMHD2X | Wall | 2 |
| WMHD6X | Wall | 6 |
Nominal dimensions, inches [mm].
| Part Number | Description | |
|---|---|---|
MPC-24-LC-A | Pass-through cassette, 24F OS2, 2x MTP-12 (male, APC) to 12x LC/UPC duplex, Type A | Quote |
MPC-24-LC-U | Pass-through cassette, 24F OS2, 2x MTP-12 (male, APC) to 12x LC/UPC duplex, Method B / Universal | Quote |
Part number format: MPC-24-LC-[polarity]. A = Type A straight-through; U = Polarity Method B / Universal.
2-page PDF: construction, performance, fiber maps and ordering.
If it didn't start:
Download One-Optics-MPO-Pass-Through-Cassette-Datasheet.pdfThe part number from the builder is filled in for you. Sales replies by email with pricing and lead time.
+1 (702) 337-2788 · sales@oneoptics.com