StarTech Adapters
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StarTech.com DB9 to DB25 Serial Adapter - M/F - AT925MF
Regular price $7.99 USDRegular priceUnit price / perSale price $7.99 USD -
StarTech.com 4-Port Multi-Device USB-C Charger, 240W Total, 1-Port 140W EPR, Screw Locking Ports, Ideal for Boardrooms, 2x 10ft Cable Incl - 424D3N-USB-C-CHARGER
Regular price $209.99 USDRegular priceUnit price / perSale price $209.99 USD -
StarTech.com 140W USB-C Wall Charger, 3x USB-C/1x USB-A, PD 3.1 Portable GaN Power Adapter for MacBook Pro/Max/Dell XPS/Inspiron/Precision - 3114GCN-WALL-CHARGER
Regular price $99.99 USDRegular priceUnit price / perSale price $99.99 USD -
StarTech.com 2.5GbE USB-C to Ethernet Adapter, 100W PD Pass-Through, NBASE-T NIC, USB 3.0 Type-C 2.5/1G Multi Speed Network, USB 3.1 RJ45 - 2GPD3-USB-C-ETHERNET
Regular price $38.99 USDRegular priceUnit price / perSale price $38.99 USD -
StarTech.com 3ft (1m) USB to Serial Cable, DB9 Male RS232 to USB Converter, USB to Serial Adapter, COM Port Adapter with Prolific IC - 1P3FP-USB-SERIAL
Regular price $27.99 USDRegular priceUnit price / perSale price $27.99 USD -
StarTech.com 3ft (1m) USB to Serial Cable with COM Port Retention, DB9 Male RS232 to USB Converter, USB to Serial Adapter, Prolific IC - 1P3FPC-USB-SERIAL
Regular price $35.99 USDRegular priceUnit price / perSale price $35.99 USD -
StarTech.com M.2 to U.3 Adapter, For M.2 NVMe SSDs, PCIe M.2 Drive to 2.5inch U.3 (SFF-TA-1001) Host Adapter/Converter, TAA Compliant - 1M25-U3-M2-ADAPTER
Regular price $42.99 USDRegular priceUnit price / perSale price $42.99 USD -
StarTech.com USB-C to Ethernet Adapter, 100W PD Pass-Through, NIC, USB 3.0 Type-C 1Gbps Multi Speed Network, USB 3.1 RJ45, Windows & Mac - 1GPD3-USB-C-ETHERNET
Regular price $34.99 USDRegular priceUnit price / perSale price $34.99 USD -
StarTech.com 1ft (30cm) HDMI to DisplayPort Adapter, 4K 60Hz HDR HDMI Source to DP Monitor, USB Bus Powered, HDMI 2.0 to DisplayPort 1.2 - 128-HDMI-DISPLAYPORT
Regular price $57.99 USDRegular priceUnit price / perSale price $57.99 USD -
StarTech.com USB-C to HDMI Adapter, 8K 60Hz / 4K 120Hz, Thunderbolt / USB4 Compatible, USB C to HDMI 2.1 Converter - 112B-USBC-HDMI21
Regular price $44.99 USDRegular priceUnit price / perSale price $44.99 USD -
StarTech.com 1-Port PCI Express Serial Card, PCIe to RS232 (DB9) Serial Interface Card, 16C1050 UART, COM Retention, Low Profile, Win & Linux - 11050-PC-SERIAL-CARD
Regular price $52.99 USDRegular priceUnit price / perSale price $52.99 USD -
StarTech.com USB-C to Dual-HDMI Adapter, USB-C/A to 2x HDMI, 4K 60Hz, 100W PD Passthrough, 1ft/30cm Cable, USB to HDMI Converter, TAA - 109B-USBC-HDMI
Regular price $99.99 USDRegular priceUnit price / perSale price $99.99 USD -
StarTech.com USB to Dual HDMI Adapter, USB A/C to 2x HDMI Displays (1x 4K30, 1x 1080p), USB 3.0 to HDMI Converter, 4in/11cm Cable, Win/Mac - 107B-USB-HDMI
Regular price $68.99 USDRegular priceUnit price / perSale price $68.99 USD -
StarTech.com 140W USB-C Wall Charger, USB-IF Certified, PD 3.1 Portable GaN Charging Power Adapter, 6ft/1.8m USB-C to USB-C Cable - 1014GCN-WALL-CHARGER
Regular price $87.99 USDRegular priceUnit price / perSale price $87.99 USD
Bridge Any Connection Gap in Your Setup
Island Electrical Supply carries StarTech adapters and converters for video, USB, network, and serial connections. Whether you need to connect a USB-C laptop to a VGA projector, add Ethernet to a tablet, or convert fiber to copper, StarTech has an adapter for it.
Best for: IT departments, help desks, and AV integrators who need a reliable supply of adapters to connect legacy and modern devices across every interface standard.
Shop by Adapter Type
- Video Adapters — HDMI, DisplayPort, USB-C, DVI, and VGA converters for multi-monitor setups
- USB Adapters — USB-C to USB-A, USB to serial, USB to Ethernet, and more
- Network Adapters — Gigabit, 2.5G, and 10G Ethernet adapters (USB and PCIe)
- Media Converters — fiber-to-copper, SFP-based, and protocol converters
- Wireless Adapters — WiFi and Bluetooth USB adapters
Choosing the Right Adapter
Active vs Passive Adapters
Passive adapters simply rewire pin connections between compatible standards (e.g., DisplayPort to HDMI). Active adapters contain a conversion chip and are required when the source port does not natively output the target signal — for example, USB-C to VGA or USB-C to dual HDMI. Active adapters cost more but support broader compatibility.
USB-C vs Thunderbolt
USB-C adapters work with any USB-C port. Thunderbolt adapters require a Thunderbolt 3 or 4 port but deliver higher bandwidth — important for dual 4K displays, 10 Gigabit Ethernet, or PCIe storage. Check your laptop specs to know which port you have before buying.
Pair With Your Adapters
- Cables — the cables that connect to your adapters
- Docking Stations — multi-port laptop docks when a single adapter is not enough
- USB Hubs — expand USB ports alongside your adapters
- Monitors — displays for your video adapters and converters
- All Networking Equipment — switches, APs, and firewalls
- All StarTech Products — the full 1,400+ product catalog
Qualifying orders ship free. Contact our team for adapter compatibility guidance.
Frequently Asked Questions
Will a USB-C to HDMI adapter support 4K?
Most StarTech USB-C to HDMI adapters support 4K at 30Hz or 60Hz depending on the model. Check the specific product specs for maximum resolution and refresh rate. Models with DisplayPort Alt Mode or Thunderbolt 3/4 support generally deliver 4K 60Hz.
Do StarTech network adapters work without drivers?
Many StarTech USB Ethernet adapters are natively supported by Windows 10/11, macOS, and Linux with no additional drivers. Check the product compatibility list for your operating system. PCIe network cards may require a driver download.