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Monoprice Select Series USB-C 3-Port USB 3.0 Hub and Gigabit Ethernet Adapter - Monoprice.com
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Dual Port USB Adapter – NOCQUA Adventure Gear
4-Port USB to RS-232 Serial Adapter Hub
Multi-Port USB-C Adapter, Black Mobile Accessories - EE-P5000BBEGWW | Samsung US
Plugable USB 3.0 10-Port Hub with 50W Power Adapter – Plugable Technologies
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USB 2.0 to Serial (9-Pin) DB-9 RS-232 Adapter Cable 6ft Cable - Sabrent
USB-C to 4-Port USB-A Hub with Quadruple Connection
HP USB to Serial Port Adapter J7B60AA B&H Photo Video
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Insignia™ 1.3' USB-to-RS-232 (DB9) PDA/Serial Adapter Cable, with Prolific Chipset Black NS-PU99501 - Best Buy
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EZQuest 4-Port USB 3.0 Hub Adapter with USB Type-C PD 3.0 X40024
4 Port Professional RS-232 USB 2.0 to Serial Adapter
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USB 3 to Gigabit Network Adapter & Hub - USB and Thunderbolt Network Adapters | StarTech.com
