This product is either discontinued or we cannot get that from suppliers.
Qnap NAS Accessories SSD-MSATA-256GB-A01, SSD Module, 2 x 128.00 GB, SATA III (6 Gb/s).
2 x 128 GB mSATA SSD, SATA 6Gb/s, Internal SSD Module, compatible with TS-x80 Pro, TS-x80U (R2), TS-x80U-SAS-RP (R2), TS-871U-RP, TS-1271U-RP