4M27A65821: Lenovo DB720S 16-Port SW License with 8x 64 Gbps SWL SFP-DD transceivers
Also listed as: BPJ4
DB720S 16-Port SW License with 8x 64 Gbps SWL SFP-DD transceivers. Listed by Lenovo as a transceiver for the ThinkSystem DB720S. The pairing comes from the vendor product guide, which also gives the quantity limits and any controller, firmware or slot requirements. Check those rules and the part number suffix before buying a used unit.
Specifications
| Part number | 4M27A65821 |
|---|---|
| Brand | Lenovo |
| Type | Transceivers |
| Other numbers | BPJ4 |
| Speed gbps | 64 |
| Vendor description | DB720S 16-Port SW License with 8x 64 Gbps SWL SFP-DD transceivers |
Fits these models
Check compatibility with Lenovo
Before you buy, confirm the exact configuration against the vendor's own lists: firmware levels, operating systems, adapters and optics that Lenovo has tested with the Lenovo 4M27A65821.
- Compatibility Lenovo ServerProven (options and OS compatibility)
- Specifications Lenovo Press product guides
- Support Lenovo Data Center Support
Buying or selling 4M27A65821?
New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.
Sources
- Lenovo ThinkSystem DB720S Gen7 FC SAN Switch Product Guide, checked 2026-10-28