The 10 best Computers Serial Adapters you can buy of 2021

4.7 ⭐ ⭐ ⭐ ⭐ ⭐

• HDMI Coupler Female Extension: easily connects 2 HDMI cables into 1 HDMI cable for long distance extension purpose and turn HDMI male port to female port for connecting other device;
• Max 4K@60hz: UGREEN HDMI female to female 4K coupler comply with HDMI 2.0 standard, support 4K HDR Pass Through with HDMI 2.0 Cable and display resolution up to 3840×2160, 2560×1600, 2560×1440, 1920×1200, and 1080p so you will capture every detail;
• Audio Video Sync: this hdmi female adapter support Audio Return Channel, HDMI Ethernet Channel, 3D and 7.1, 5.1 Dolby digital sound pass through for you to surround by rich sound;
• Wide Compatibility: this female female hdmi connector support HDMI signals from devices such as TV Box, Xbox 360, Xbox One, PS4, PS3, PS2, Blu-Ray Player, PC, Laptop for HDTV, Monitor, Projector and more;
• Durable quality: with gold-plated connectors that resist corrosion while offering optimum signal transfer for better viewing experience. Package included: 2 Pack female to female 4K HDMI adapter.

4.7 ⭐ ⭐ ⭐ ⭐ ⭐

• ➤ M.2 NVME（M Key） SSD to PCIe expansion card
• ➤ Equipped with Aluminum heatsink can reach 5-20 degrees celsius cooling effect
• ➤ Supports 2280/2260/2242/2230mm M.2 SSD
• ➤ PCIe3.0 x4 support PCIe x4 / x8 / x16 slot
• ➤Supports NVMe SSD, such as Samsung 950Pro/960EVO/XP941/PM951/PM961/SM951/SM961, Plextor M6e Series, Kingston HyperX Predator M.2 SSD and so on.

4.3 ⭐ ⭐ ⭐ ⭐

• HOW IT WORKS: BENFEI USB to RS232 DB9 Male Serial Adapter is designed for connecting to serial devices such as DB9 equipped serial modems, ISDN Terminal Adapters, digital cameras, label writers, palm PCs, barcode scanners, PDAs etc through USB port with 1Mbps data transfer rate;
• CONNECTORS: With standard USB Type A Male to standard Male 9-pin DB9 RS-232 serial connector; It’s not the USB to VGA cable or USB to DB9 cable. If you need USB-VGA, please refer to https://www.amazon.com/dp/B085KX97QG?ref=myi_title_dp
• CONDUCTOR & SHIELDING: Tinned Copper Conductor(Wire guage#24#28) and triple shielding ensure the best data transfer rate. Powered by USB port, no external power adapter required. Simple installation, plug & play after one time driver installation;
• WIDE COMPATIBILITY: USB to RS232 adapter is with Prolific PL-2303 Chipset for widest possible compatibility with Windows 10, 8, 7, XP, Vista, 2000, 98, MacOS8 or higher, Linux 2.4.0 and later, and other platforms.
• 18 MONTH WARRANTY: Exclusive Benfei Unconditional 18-month Warranty ensures long-time satisfaction of your purchase; Friendly and easy-to-reach customer service to solve your problems timely

4.7 ⭐ ⭐ ⭐ ⭐ ⭐

• Serial adapter allows a serial device to be connected to a USB computer
• Plug-and-play convenience:DB9 serial port is seen as a COM port by your computer, and is available for use by any program that accesses COM ports
• No need for an external power adapter:draws power directly from your computer via the USB connection
• DB9 serial port supports data transfer rates up to 230 Kbps:twice the speed of a standard built-in serial port
• LED shows adapter status and data activity at a glance

4.6 ⭐ ⭐ ⭐ ⭐ ⭐

• Cable Length: 6 ft cable
• Side Connectors: Male Thumbscrews
• Supports remote wake-up and power management – No IRQs, no IRQ conflicts
• Provides a 96 byte buffer for each upstream and downstream data transfer
• Compatible with USB Specification v1.1(0) & USB CDC v1.1, USB 2.0

4.5 ⭐ ⭐ ⭐ ⭐

• ➤ Supports two M.2 SSD simultaneously (One SATA interface and one PCIE x4 interface)
• ➤ Converts one M.2 (M Key) interface to PCIe 3.0 x4 interface (PCIe 2.0 Compatible), Converts one M.2 (B Key or B+M Key) interface to SATA 6Gbps interface (SATA cable connection required).
• ➤ With advanced heat sink solution,PCB 24 X 5 copper hole effective ventilation heat dissipation,Including 2 heat sinks
• ➤ Supports M.2 SSD size 2230, 2242, 2260, 2280, 22110mm
• ➤ Including both regular size and low-profile slot brackets for flexible system chassis installation. LED power and data transfer status. No driver installation required

4.2 ⭐ ⭐ ⭐ ⭐

• HOW IT WORKS: BENFEI USB to RS232 DB9 Male Serial Adapter is designed for connecting to serial devices such as DB9 equipped serial modems, ISDN Terminal Adapters, digital cameras, label writers, palm PCs, barcode scanners, PDAs etc through USB port with 1Mbps data transfer rate;
• CONNECTORS: With standard USB Type A Male to standard Male 9-pin DB9 RS-232 serial connector; It’s not the USB to VGA cable or USB to DB9 cable. If you need USB-VGA, please refer to https://www.amazon.com/dp/B085KX97QG?ref=myi_title_dp
• CONDUCTOR & SHIELDING: Tinned Copper Conductor(Wire guage#24#28) and triple shielding ensure the best data transfer rate. Powered by USB port, no external power adapter required. Simple installation, plug & play after one time driver installation;
• WIDE COMPATIBILITY: USB to RS232 adapter is with Prolific PL-2303 Chipset for widest possible compatibility with Windows 10, 8, 7, XP, Vista, 2000, 98, MacOS8 or higher, Linux 2.4.0 and later, and other platforms.
• 18 MONTH WARRANTY: Exclusive Benfei Unconditional 18-month Warranty ensures long-time satisfaction of your purchase; Friendly and easy-to-reach customer service to solve your problems timely

4.3 ⭐ ⭐ ⭐ ⭐

• Provides the connection between USB and the traditional RS-232 serial port.
• Supported OS: Windows 2000/ME/98SE, Windows XP (32/64-bit), Windows Vista (32/64-bit), Windows 7 (32/64-bit), Windows 8/8.1 (32/64-bit), Windows 10 and higher (32/64-bit), Mac OS X 10.6 and Above, Linux 2.4 or above.
• Easy to setup: Plug & Play – Simply plug your device into the adapter and the adapter into your PC or Mac.
• COM ports and Baud rates can be modified to desired set up.
• This product comes with LIFETIME manufacturer warranty.

4.6 ⭐ ⭐ ⭐ ⭐ ⭐

• 5ft standard USB to rs-232 cable with double color led display of full signal power
• Full rs-232 signal led tester output via dual color display
• Ftdi chip USB to rs-232 cable with led monitor
• Easy test rs-232 host to device link
• Os compatibility: Windows 7, 8 and Windows 10 as well as Linux and MacOS 10.X

4.6 ⭐ ⭐ ⭐ ⭐ ⭐

• 16 inch total length, easy test RS-232 Host to Device link
• Supports reversible USB type-C connection only, can not be connected to any other USB port.
• Fully compliant with USB Spec 2.0 Compliant USB Spec1.1.
• Compatible with Windows and Mac OS
• ESD Protection for RS-232 I/O +-15KV RS-232 for DTE Mode