In one example in accordance with the present disclosure, a system comprises a first computing device comprising a first baseboard management controller (BMC), a second computing device comprising a second BMC, a first universal serial bus (USB) port coupled to the first BMC, a second USB port coupled to the second BMC, a multiplexor coupled to the first USB port and the second USB port, a shared USB port coupled to the multiplexor, and a chassis manager coupled to the first computing device and the second computing device. The chassis manager may connect, with the multiplexor, the shared port to the first USB port or the second USB port.