From Amazon
Eaton 4-Port Ultra Mini USB 2.0 Hub, 480 Megabits Per Second Data Transfer, Built In USB 2.0 Cable, Up to 1.5A Charging, Additional Micro USB-B Port for Extra Power (U222-004)
OnBuy
Tripp Lite 4-Port USB 2.0 Hi-Speed Ultra-Mini Hub, Data Transfers up to 480 Mbps