SM17A06251 Drive Caddy / 9W8C4 Adapter - 2-Pack Options

Drive mounting options for Lenovo SR650 and SR550 servers with a matching 3.5-inch drive bay configuration.

Select your required option before ordering. You will receive only the contents of the option you select, not all three options.

Exact Package Contents When Order Quantity Is 1Option: 3.5" Caddy + 2.5" Adapter

• 2 x SM17A06251 3.5-inch tray caddies
• 2 x 9W8C4 adapters for mounting 2.5-inch drives in matching 3.5-inch caddies

Total: 4 components, making 2 sets. Each set contains 1 caddy and 1 adapter.

Option: 3.5" Caddy Only

• 2 x SM17A06251 3.5-inch tray caddies
• No 2.5-inch adapters included.

Total: 2 caddies.

Option: 3.5" to 2.5" Adapter Only

• 2 x 9W8C4 drive adapters
• No outer 3.5-inch tray caddies included.

Total: 2 adapters.

How the Pack Quantity Works

The quantities above apply to an order quantity of 1 for your selected option. An order quantity of 2 doubles those contents. For example, ordering quantity 2 of the combination option provides 4 caddies and 4 adapters.

The combination option is 2 complete sets, not 2 components in total. Hard drives and servers are not included with any option.

Product References

• 3.5-inch tray / caddy: SM17A06251
• Drive mounting adapter: 9W8C4
• Application: for Lenovo SR650 / SR550 with a compatible 3.5-inch tray configuration

Important Adapter Information

The 9W8C4 adapter is for mounting a 2.5-inch drive inside a matching 3.5-inch tray / caddy. It must be used with that caddy and is not a standalone tray for a 2.5-inch server drive bay.

Check Compatibility Before Ordering

• Confirm your complete server model and drive bay configuration.
• Compare the required part number, tray shape, latch and mounting positions with your existing hardware.
• Do not rely on the server model name or drive size alone to confirm fitment.
• Check both the selected option and order quantity before checkout.

For fitment questions, please send your server model, drive bay size and existing part number through messages before ordering.

Shipping and Returns

Please refer to the shipping and returns sections of this listing for handling time, delivery estimates and the terms applicable to your order.

Contact

Please contact us through messages with product or order questions.

On Sep 27, 2026 at 23:31:27 PDT, seller added the following information: