874543-B21 is the HPE option part number for 1U Gen10 SFF Easy Install Rail Kit. It is the rack rail kit specified for mounting a 1U ProLiant DL360 Gen10 SFF server into a rack cabinet. If you are quoting or building to a configuration, this is the line item that provides the rail hardware itself, ordered separately from the server chassis. The kit is sized for a 1U rack opening and is matched to the DL360 Gen10 platform, so it should be selected against that server model rather than treated as a generic rail assembly.
HPE Option Part #: 874543-B21
PRODUCT SPECIFICATIONS FOR 874543-B21:
- Product Type: Rack rail kit
- Height (Rack Units): 1U
COMPATIBLE WITH:
PROLIANT DL SERIES
** This list may not be complete. Contact us via Live Chat if you have any questions about compatibility.
FREQUENTLY ASKED QUESTIONS ABOUT 874543-B21
Which server does 874543-B21 support?
This rail kit is listed as compatible with the HPE ProLiant DL360 Gen10. It is a 1U kit intended for the SFF configuration of that server. If you are mounting a different generation or a different chassis height, verify the rail kit called out for that specific platform instead, as rail kits are matched to the server model and rack unit height they were designed around.
How many rack units does this kit occupy?
The kit is a 1U rail solution, matching the 1U height of the DL360 Gen10 it supports. When planning rack elevations, allocate one rack unit per server installed on this kit. Confirm your cabinet has the depth and mounting rail style required by the kit before finalizing the layout, since rail kits depend on the rack posts as much as on the server.
Is 874543-B21 included with a DL360 Gen10 server?
874543-B21 is an HPE option part number, which means it is ordered as a separate line item rather than assumed to be in the server box. When building a configuration, add the rail kit explicitly alongside the server so the quote includes the mounting hardware. If you are expanding an existing deployment, order one kit per additional 1U server being racked.
Does this kit work with an LFF DL360 Gen10?
The compatibility listed for 874543-B21 is the DL360 Gen10 in the SFF configuration. Chassis drive form factor can affect chassis depth and the rail kit specified for it, so do not assume this kit carries over to a different drive configuration. Check the rail kit part number called out for the exact server configuration you are deploying.
How many kits do I need for multiple servers?
One rail kit supports one server. If you are racking several DL360 Gen10 SFF systems, order a matching quantity of 874543-B21 so each chassis has its own rail pair. Account for this in the bill of materials early, since rail quantity is a common omission when servers are quoted individually and racked together later.
HPE PARTSURFER INFO FOR 874543-B21
| Spare PN | Description | |
|---|---|---|
 | 875544-001 | Rack mounting easy install kit 1U - For 1U server models with Small Form Factor (SFF) drives - Includes left and right friction type slide rails |
Last Updated: 2026-03-24
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This product is warrantied against hardware failure for a period of 1 Year from the date of purchase. Before making a purchase, please take a moment to review our return policy below.
Returns
It is the customer's responsibility to verify compatibility with their machine(s) before placing an order. If an item is ordered by mistake, it can be returned for refund, minus a 25% restocking fee, within 5 business days of receipt. The cost of freight is not refundable.
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Defective Products
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