This product is either discontinued or we cannot get that from suppliers.
Startech 4 Bay 3.5in Sata Sas Backplane Trayless HSB43SATSASB, 4 - Drive Connectors: 29 pin SAS SFF-8482 Female, 4 - Host Connectors: SATA Data & Power Combo (7+15 pin), 4 - Other Interface(s): 4 Pin Fan/LED, Front Door Key Lock: Yes, Fan(s): Yes, 2 - Fans: 40 mm, Interface: SATA / SAS, Number of Drives: 4, Drive Size: 3.5in, Compatible Drive Types: SAS & SATA, Drive Installation: Fixed, Number of internal 3.5 inch bays: 4, Fan Bearing Type: Dual Ball Bearing, 4 - LED Indicators: Drive Power/Activity
This 4-bay 3.5" SATA/SAS backplane, installed into three standard 5.25” front drive bays, makes it easy to swap 3.5” SATA or SAS drives in and out of your server or desktop computer. It features a trayless design that saves you installation time and enables you to insert or remove drives as needed.