The SSD is not included, SSD must be 17+7pin contacts. (See the photo, otherwise not work), Please check your SSD, It will don't work if it upto 3.1A or later.
JMS580 chipset: JMS580 is USB 3.0 to SATA Gen3 bridge controller. The upstream port supports USB 5Gbps connectivity.
Package includes: 1 x USB-C to MAC SSD Enclosure, 1 x USB-C to USB-A 3.0 Cable, 1 x Screwdriver. Support Mac Air Pro Retina 2012 air, pro.
Compatibility With: 1) 2012 Mac Air
SSD Form Factor: 24x 108.9 mm. fit for SSD from 2012 Mac air A1466 MD231 MD232 A1465 MD223 MD224: THNSNS064GMFP, THNSNS128GMFP, MZ-EPC5120/0A2 (512GB) 2) 2012 Mac PRO
SSD Form Factor: 32.5 x89mm. fit for following ssd from 2012 Mac PRO A1398 A1425 MC975 MC976 MD976: MZ-DPC5120/0A2, SD5SL2-512G-1205E, MZ-DPC128T/0A2, MZ-DPC2560/0A2..
Interface: Type-C USB 3.0
Support current: 3A (Max. ), The product has Type-C USB 3.0 interface, supporting Plug & Play and Hot-Swapping.
Data transfer: Support 5Gbps data rating and 5V power. Compliant with USB Base Specification 3.1 / 3.0, Output USB 3.0 Type-A interface and Type-C interface. Compliant with USB 2.0 Hi-Speed (480Mbps), USB 1.1 Low-Speed ( 1.5M bps)