This article covers Kensington SD5500T Thunderbolt 3 & USB-C ドッキングステーション デュアル4K DisplayPort.

Overview

The Kensington SD5500T is a Thunderbolt 3 and USB-C docking station designed for modern laptops that need expanded connectivity and power delivery. It supplies up to 60W of Power Delivery 3.0 to charge the host laptop while driving up to two 4K displays via its dual DisplayPort 1.2 outputs. This dock is compatible with MacBooks (macOS 10.14+), Thunderbolt 3-capable Windows notebooks from Lenovo, Dell, HP, ASUS, and others, as well as Microsoft Surface devices (USB-C mode). A 0.7m Intel-certified Thunderbolt 3 cable is included, along with a 135W AC adapter (60W reserved for host charging, the rest for peripherals).

Connectivity & Compatibility

The host interface can be either Thunderbolt 3 (40 Gbps) or USB-C (up to 10 Gbps). In Thunderbolt 3 mode, the dock supports two 4K displays at 60 Hz (4096×2160 @30-bit color). In USB-C mode, it supports a single 4K display at 30 Hz or two 1080p displays at 30 Hz. Important caveat: MacBook Air and 13-inch MacBook Pro with original M1 chip are limited to one external display due to Apple's chipset limitation; M1 Pro/Max models can drive two. All DisplayPort connections require passive cables; to connect to HDMI monitors, an active adapter or cable is needed. The dock features two USB-C Gen2 ports (up to 10 Gbps, 5V/1.5A charging), three USB-A ports (one Gen2 @10Gbps/1.5A, two Gen1 @5Gbps/0.9A), one Gigabit Ethernet port, and a 3.5mm combo audio jack. Kensington's lock slot (lock sold separately, part K64673AM) and VESA mounting capability (mount sold separately, part K34050WW) add physical security and desk-clutter reduction.

Product Info

The Kensington SD5500T (model K38130US) launched in early 2020 and is still widely available at around ¥25,000 (~$175 USD) on Japan. It carries a 3-year warranty with Kensington technical support. The box includes the dock, a 135W AC power adapter, and a 0.7m Intel-certified Thunderbolt 3 cable. The dock sits in the mid-to-high tier of Thunderbolt 3 docks, offering dual DisplayPort outputs and 60W PD at a price below many competitors like the CalDigit TS3 Plus or Belkin Thunderbolt 3 Dock. The inclusion of two native DisplayPort ports is a distinct advantage for users who want to avoid HDMI adapters.

Best Use Cases

MacBook professionals needing dual 4K monitors for video editing or design: With Thunderbolt 3, the SD5500T drives two 4K 60Hz displays, ideal for creative workflows. Note M1 non-Pro MacBooks are limited to a single external display. Windows laptop users with multiple USB peripherals: Three USB-A and two USB-C ports allow connecting external storage, keyboards, mice, and charging phones simultaneously. Gigabit Ethernet ensures a reliable wired network for remote work or data-heavy tasks. Surface Pro/Laptop owners: Surface devices connect via USB-C (non-Thunderbolt), providing single display output and expanded USB-A connectivity. Great for users who need legacy USB devices. Caution: The dock provides 60W PD, which may not be enough for 15-inch MacBook Pros or high-performance Windows laptops requiring 65W+. Those laptops may need an additional charger.

Product Disclosure (Amazon)

  • Manufacturer: Kensington
  • Seller: Amazon US
  • Fulfilled by: Amazon US
  • ASIN: B081CVDWLH
  • Note: This article covers a manufacturer-made product based on Amazon listing details.