Is U.2 (SFF-8639) reversible?

No, U.2 (SFF-8639) is not reversible — it can only be inserted in one orientation.

What connector family does U.2 (SFF-8639) belong to?

U.2 (SFF-8639) belongs to the Storage connector family.

Storage

Unknown

Family

Storage

Form Factor

Dual-port wide

Pin Count

Year

2015

Enterprise NVMe connector supporting PCIe x4 in a 2.5-inch drive form factor. Found in servers and workstations for hot-swappable NVMe SSDs.

On this page

Family Storage

Form Factor Dual-port wide

Pin Count 68

Reversible No

First Released 2015

32.00 Gbps

64.00 Gbps

U.2 (SFF-8639) ↔ M.2 (M-key)