Lenovo Unified Pairing - wireless mouse / keyboard receiver - USB
StarTech.com Bluetooth 5.0 Audio Receiver with NFC, Bluetooth Wireless Audio Adapter BT 5.0, 66ft (20m) Range, 3.5mm/RCA or Digital Toslink/SPDIF Optical Output, Lossless HiFi Wolfson DAC - For Stereos/Speakers - Bluetooth wireless audio receiver
StarTech.com 15 ft Thin Toslink Digital Optical SPDIF Audio Cable - 15ft / 15 Feet Optical Audio Cable (THINTOS15) - digital audio cable (optical) - SPDIF - 4.6 m
Connect a supported PS/2 keyboard to the USB port on your computer. The GC46MFKEY PS/2 Keyboard to USB Adapter features a USB-A male connector and a 6-pin (PS/2) female port, allowing you to connect a PS/2 keyboard to a computer through a USB port.
Dell Universal Pairing Receiver WR221 - wireless mouse / keyboard receiver - USB, RF 2.4 GHz
NETGEAR Nighthawk Pro Gaming XR1000 - wireless router - Wi-Fi 6 - desktop