
Since most modern computers today don't have external serial or parallel ports, you'd be lucky if they had such legacy support. If so, you'll need one of these if you need to connect a device that requires a serial port connection like this, and as most reviews here say it's a great addition for those who need a serial port to plug into the serial header -Motherboard connector is something that has a 16 inch ribbon cable connector so it will easily fit into almost any available expansion slot.

CKL 4 Port KVM Switch Dual Monitor DisplayPort 4K 60Hz: Unprecedented Multi-Computer Control with Audio, USB 2.0 HUBS, and DP 1.2
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CKL Quad Monitor HDMI KVM Switch 4 Port 4K@30Hz with Cables - Extended and Mirrored Display Support for Windows, Linux, and Mac
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NEWCARE HDMI KVM Switch: 4K@60Hz, 2x1 HDMI2.0 Ports + 3X USB KVM Ports - Share 2 Computers on UHD Monitor, with Wireless Keyboard and Mouse Support - USB Disk, Printer, USB Camera Compatible
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Fractal Design Define R5 - ATX Mid Tower Computer Case - High Airflow and Silent Optimized - Includes 2x Dynamix GP-14 140mm Silent Fans - Water-Cooling Ready - Black
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Fractal Design Node 304 - Black - Mini Cube Compact Computer Case - Small Form Factor - Mini ITX – mITX - Enhanced Airflow - Modular Interior - Includes 3x Fractal Design Silent R2 120mm Fans - USB 3.0
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MasterBox Q300L Micro-ATX Tower with Magnetic Dust Filter, Acrylic Side Panel, Adjustable I/O & Ventilated Airflow, in Black
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Computer case Deepcool Matrexx 55 black
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