Usb 2.0 Hub Multi Usb Splitter Power Adapter 4/7 Port Mouse Keyboard U Disk Card Reader Printer Expander With Switch For Pc V3g6|USB Hubs| - AliExpress
MDS-X Expander
NS 4 Port USB 3.0 Hub Splitter Keyboard Mouse Adapter Multiport Expander for PS4,PS4 Pro,PS4 Slim,Xbox ONE,Xbox One S, PC|USB Receiver Adapter| - AliExpress
Text Expander speeds your typing in 3 easy steps - ShortKeys
In progress - Custom hand-wired build with an IO expander instead of two ProMicros : r/ErgoMechKeyboards
Amazon.com: USB Splitter for Laptop LOBKIN 4-Port USB Hub 3.0 with Separate ON Off Swich Slim Multiple Port Expander for Keyboard and Mouse Flash Drive Mobile HDD PC Mac : Electronics
Amazon.com: 4-Port USB Hub 3.0, T-Sound USB Splitter for Laptop, Keyboard and Mouse USB Port Expander for MacBook, Mac Pro, Mac Mini, iMac, Surface Pro, XPS, PC, Flash Drive,SSD, Console, Printer, Camera :
Amazon.com: USB Hub 3.0, QUUGE 4-Port USB Splitter for Laptop [4ft Cable], Multi Port USB-A Expander with Micro Power [Fast Data Tranfer] Compatible with Keyboard, Mouse, Mobile HDD, Flash Drive, Printer PC :
FTVOGUE USB Port Expander,USB C Hub 5 in 1 5Gbps Transmission Type C to Audio PD Port Expander for Mouse Keyboard,USB C Splitter - Walmart.com