StarTech.com 1m (3.3ft) Passive Thunderbolt 3 Cable
Bottom line: The StarTech.com 1m Passive Thunderbolt 3 Cable ($39.99 on Amazon as of 2026-10-21 16:28 UTC): Intel Thunderbolt-certified, so compatibility with TB3/TB4 hosts is guaranteed; main trade-off: passive design caps at 20Gbps, half the 40Gbps an active TB3 cable delivers.
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*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.
Pros & Cons
Pros
- ✓ Intel Thunderbolt-certified, so compatibility with TB3/TB4 hosts is guaranteed
- ✓ Full 20Gbps passive throughput at 1m, enough for external PCIe and NVMe chassis
- ✓ 100W PD 3.0 charging passes through, powering a laptop over the same cable
- ✓ Drives a single 4K 60Hz display through a dock or direct-attach monitor
- ✓ Coaxial wire with braided alloy shield cuts EMI on high-bandwidth runs
Cons
- ✗ Passive design caps at 20Gbps, half the 40Gbps an active TB3 cable delivers
- ✗ 1m (3.3ft) is short for desk-to-tower or wall-mounted monitor runs
- ✗ 4K 60Hz ceiling means no 8K or dual-4K daisy chains
- ✗ 4.7mm outer diameter is stiffer than thin USB-C charge cables
Manufacturer description
PROVIDE TWICE THE DATA TRANSFER SPEED OF ANY OTHER CABLE TYPE, ENABLE FULL 4K 60
SpecPicks Verdict
SpecPicks scored StarTech.com 1m Passive Thunderbolt 3 Cable using a rating × review-volume × price-fit model applied to published specs and reviews across the PC & gaming hardware category. StarTech.com's PC & gaming hardware lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for PC & gaming hardware of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Key Features
- HIGH PERFORMANCE: 1m (3.3ft) Passive Thunderbolt 3 cable delivers consistent 20 Gbps and 100W charging; Connect a Thunderbolt 4 / 3 / USB-C laptop, or iPad Pro (5th gen and later) to a docking station or UHD monitor
- THUNDERBOLT CERTIFIED: Intel Thunderbolt-certified for guaranteed compatibility with Thunderbolt hosts and devices; Supports up to 4K 60Hz
- QUALITY CONSTRUCTION: Coaxial wire with braided alloy shield for enhanced EMI protection; Robust strain reliefs on connectors for improved durability
- APPLICATIONS: Facilitate a longer Thunderbolt 3 or USB-C connection supporting full 20 Gbps, video, and power; Ideal for reliable performance in high-bandwidth applications such as external PCIe chassis/storage drives, and Thunderbolt networking devices
- SPECS: 1m (3.3ft); Thunderbolt 3 (20 Gbps); 4K 60Hz; 100W PD 3.0; Cable Outer Diameter.: 0.19in (4.7mm)
Full Specifications
| Brand | StarTech.com |
|---|---|
| Color | Black |
| Model | TBLT3MM1M |
| SPECS | 1m (3.3ft); Thunderbolt 3 (20 Gbps); 4K 60Hz; 100W PD 3.0; Cable Outer Diameter.: 0.19in (4.7mm) |
| Wattage | 100 watts |
| Frequency | 20 GHz |
| Cable Type | C |
| Item Shape | Round |
| Model Name | 1m Thunderbolt 3 (20Gbps) USB-C Cable |
| Unit Count | 1.0 Count |
| Item Length | 3.3 Feet |
| Part Number | TBLT3MM1M |
| Connectivity | USB-C |
| Connector Type | Usb |
| Item Type Name | Data Transfer Cable |
| Number of Pins | 24 |
| Maximum Current | 5 Amps |
| Maximum Voltage | 20 Volts (DC) |
| Number of Items | 1 |
| Special Feature | Not_Performance_Used |
| Full listing title | StarTech.com 1m (3.3ft) Passive Thunderbolt 3 Cable, 20Gbps, 100W PD, 4K Video, Thunderbolt Cable, Compatible with USB4/DP Alt Mode, Thunderbolt 4, USB 3.2/Type-C (TBLT3MM1M) |
Ready to buy?
StarTech.com 1m (3.3ft) Passive Thunderbolt 3 Cable, 20Gbps, 100W PD, 4K Video, Thunderbolt Cable, Compatible with USB4/DP Alt Mode, Thunderbolt 4, USB 3.2/Type-C (TBLT3MM1M) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.
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