USB-C Receptacle for USB 2.0 Duty — 24 Contacts, 16 Active
The Hirose CX90M-16P is a USB Type-C receptacle from the CX series, carrying 24 physical contacts — 16 of which are active signal and power lines, with 8 dummy positions for mechanical stability. It is specified for USB 2.0 operation, meaning the SuperSpeed differential pairs (SSRX/SSTX) are not wired; the connector handles USB 2.0 data (D+/D-), power (VBUS/GND), and the configuration channel (CC) through the standard 16-pin set. The 24-contact body ensures full mechanical compatibility with any USB-C plug, but the signal path stops at USB 2.0 rates. Rated at 20VAC and 0.25A per contact on the signal pins, with 1.25A available on the power contacts (VBUS/GND).
Mounting That Covers Three Build Configurations
The CX90M-16P supports board-edge cutout, surface-mount, and through-hole right-angle mounting in a single part — a flexibility that simplifies BOM management when the same connector must fit different PCB layouts across product variants. The steel/stainless shield provides EMI containment and mates with the plug shell for ground reference.
USB 2.0 vs USB 3.2 — The CX90M-16P Is Not a Direct Swap
If your design requires USB 3.2 Gen 2 (10 Gbps) signaling, the CX90MWD2G-24P or CX90B1-24P are the correct siblings — both carry the same 24-contact layout but route the SuperSpeed pairs and are rated for USB 3.2 Gen 2. The mechanical footprint and mating interface are identical across the CX series, so a board laid out for the CX90M-16P can accept the USB 3.2 variant without PCB changes, provided the extra differential pairs are routed. The CX90MW6-16P is another USB 2.0 variant but with a flange-mount option for panel-secured installations.