Home / Shop
- Description
- Specifications
P57890-B21 is the HPE ProLiant DL385 Gen11 x16/x16 Primary FIO Upgrade Riser Kit, also written HPE DL385 G11 2x16 Prim FIO Upgrade Riser Kit. It provides Slot 1 and Slot 2 in the primary riser position, next to the default Slot 3.
The primary riser of a DL385 Gen11 is a single x16 slot (Slot 3) by default. With this kit the primary position offers three PCIe 5.0 slots with x16 bus width and x16 connectors, all full-height, half-length and connected to processor 1. It cannot be chosen when the rear 4LFF cage is configured; that cage uses the rear LFF primary riser P55098-B21 with the cage kit P55088-B21. If Slot 1 and the OCP slot 21 are both in use, together they can carry up to 112GB/s, because of a processor limit.
Spare number P60861-001 is the primary riser stacking part, and P60880-001 is the primary/secondary riser stacking part. The secondary position is covered by separate kits: P55097-B21 provides Slot 6, P68392-B21 adds Slot 5, and P57891-B21 provides two further secondary risers. Secondary risers need the second processor.
| Designation | HPE ProLiant DL385 Gen11 x16/x16 Primary FIO Upgrade Riser Kit |
| Part number | P57890-B21 |
| Spare numbers | P60861-001, P60880-001 |
| Server | ProLiant DL385 Gen11 |
| Slots added | Slot 1 and Slot 2 (primary position) |
| Slot technology | PCIe 5.0 |
| Bus width and connector | x16 / x16 |
| Slot form factor | full-height, half-length |
| Processor | 1 |
| Not available with | rear 4LFF cage |
| Bandwidth limit | Slot 1 plus OCP slot 21 up to 112GB/s |