Qnap mSATA Cache Module for TS-ECX80 Series (FLASH-256GB-MSAT) Packaged quantity: 2 (specifications are for single item) Capacity: 128 GB Form Factor: mSATA Two 128GB mSATA Cache Module Applied Model: TS-EC880U-RP, TS-EC1280U-RP TS-EC2480U-RP, TS-EC1680U-RP, TS-EC880 Pro, TS-EC1080 Pro