StarTech FAN5X1TX3 50mm Ball Bearing Chassis Cooling Fan

Overview

The StarTech FAN5X1TX3 is a 50mm auxiliary chassis fan built for system builders and integrators who need reliable supplemental airflow in tight enclosures — think compact NVR chassis, rack-mounted security appliances, and embedded PC cases where stock cooling falls short under sustained load. At 1.08W draw and under 23 dBA, it adds meaningful airflow without meaningfully increasing noise or power overhead. If a primary system fan is undersized for your thermal environment, or if you're packing a chassis tighter than the OEM intended, this is the kind of low-cost, low-risk fix that actually works.

The FAN5X1TX3 ships with dual LP4 (Molex) connectors in a pass-through daisy-chain configuration plus a Tx3 motherboard header connector, so you can integrate it without sacrificing an existing power connector or fan monitoring channel.

Key Features

• Ball Bearing Construction: Ball bearings outlast sleeve bearings in high-temperature and non-horizontal orientations — the kind of installation conditions you find in wall-mounted NVR enclosures or stacked rack gear. The 50,000-hour MTBF rating translates to roughly 5.7 years of continuous operation before statistically expected failure, which is meaningful for always-on security infrastructure where you'd rather not schedule a fan swap.
• 4500 RPM / 8.63 CFM Airflow: At 4500 RPM this fan moves 8.63 cubic feet per minute — sufficient to provide targeted spot cooling for a hot component (chipset, SSD, power regulation area) or to improve overall case airflow in a small-form-factor chassis. This is a supplemental fan, not a primary system cooler; set expectations accordingly for very high TDP components.
• Sub-23 dBA Noise Floor: Running under 23 dBA means it won't be audible above ambient room noise in most deployments. In control rooms or back-office environments where rack noise matters, this is a practical specification — not just a spec-sheet number.
• 1.08W Power Consumption: Drawing only 90mA at 12V DC (1.08W), this fan adds negligible load to your power supply. In multi-fan deployments or in enclosures with tight PSU headroom, you can add several of these without meaningful impact on total power budget.
• Dual LP4 Pass-Through + Tx3 Header: The connector arrangement — LP4 in, LP4 out, Tx3 to motherboard — lets you insert this fan into an existing Molex chain without breaking it, while still feeding a tachometer signal to the motherboard or BIOS for fan health monitoring. That monitoring capability matters in unattended deployments where a dead fan can go unnoticed until thermal damage occurs.
• -10°C to 80°C Operating Range: The 80°C upper operating temperature means this fan can continue functioning in environments that are already hot — which is precisely when you need it most. The -10°C lower bound makes it viable in unheated server closets during winter.
• Compact 50mm x 50mm x 10mm Form Factor: At 50mm square and only 10mm deep (approximately 0.4 inches), this fan fits in chassis bays and mounting points designed for standard 50mm fans. Weight is just 19 grams (0.7 oz), so it won't stress lightweight enclosure mounting points.
• Black Plastic Construction: The all-plastic frame keeps weight down and avoids the grounding concerns that can arise with metal fan frames in poorly-grounded enclosures. Color-matched to most black chassis interiors.

Integration and Compatibility

The FAN5X1TX3 uses the LP4 (4-pin Molex) power connector that has been standard across ATX power supplies for decades, making it compatible with virtually any conventional desktop, tower, or industrial PC chassis PSU. The Tx3 header provides 3-pin fan monitoring compatibility with most motherboards that support fan speed sensing. If your board uses 4-pin PWM headers, note that the Tx3 is a 3-pin connection — the fan will run at full speed rather than being PWM-controlled, which is acceptable in most fixed-install scenarios.

This fan is appropriate for supplemental chassis cooling in network video recorders, embedded security appliances, and custom-built surveillance server enclosures. It is not a substitute for a primary CPU cooler or a high-CFM case fan in a workstation. Pair it with a rackmount enclosure or compact chassis where additional airflow paths improve thermal margins on storage-heavy or always-on recording systems.

Frequently Asked Questions

Q: What connector types does the FAN5X1TX3 use?

A: The FAN5X1TX3 includes two LP4 (4-pin Molex) connectors in a pass-through daisy-chain configuration, allowing you to insert the fan into an existing power chain without losing a connector, plus one Tx3 3-pin connector for fan speed monitoring via a motherboard header.

Q: What is the rated MTBF for the FAN5X1TX3?

A: The FAN5X1TX3 is rated at 50,000 hours MTBF — approximately 5.7 years of continuous operation. This rating applies to ball bearing fans operating within the specified -10°C to 80°C temperature range.

Q: How loud is the FAN5X1TX3 under normal operation?

A: The FAN5X1TX3 is rated at less than 23 dBA, which is below typical ambient office or server room noise levels. At 4500 RPM it is audible in a silent room but generally not intrusive in operational environments.

Q: Can the FAN5X1TX3 be PWM speed-controlled?

A: No. The FAN5X1TX3 uses a Tx3 3-pin connector for tachometer monitoring only — it does not support 4-pin PWM speed control. The fan runs at its rated 4500 RPM continuously when powered. Speed monitoring via a 3-pin header is supported.

Q: What is the warranty on the FAN5X1TX3?

A: The FAN5X1TX3 carries a 2-year manufacturer warranty from StarTech.

Q: Is the FAN5X1TX3 suitable for use in industrial or high-temperature enclosures?

A: Yes. The ball bearing design and 80°C upper operating temperature rating make it appropriate for enclosures that run warm, such as compact NVR chassis or always-on security appliances in poorly-ventilated spaces. Verify that the chassis mounting point accepts a standard 50mm fan.

Karl Wilson

I reach for the FAN5X1TX3 specifically when I'm dealing with compact NVR or embedded security appliance chassis that run warm under sustained 24/7 recording loads — the ball bearing design rated to 80°C and 50,000 hours MTBF is what separates this from a generic sleeve-bearing fan you'd pull off a parts shelf. Sleeve bearings degrade faster in high-ambient or non-horizontal orientations, both of which are common in wall-mount and stacked-rack installations.

Technical Highlights:

• 50,000-Hour MTBF: At continuous operation, that's roughly 5.7 years before statistically expected failure — long enough to match or exceed a typical NVR hardware lifecycle without a scheduled fan replacement.
• 1.08W at 12V DC: 90mA draw makes this essentially invisible on a power budget. You can add two or three of these in a multi-bay chassis without approaching PSU limits on any reasonable security appliance.
• Sub-23 dBA at 4500 RPM: Moving 8.63 CFM while staying under 23 dBA is a reasonable tradeoff for always-on environments — control rooms and back-office closets where any audible fan hum creates pushback from end users.

Deployment Considerations:

• The Tx3 3-pin connector supports tachometer monitoring only — no PWM speed control. In unattended deployments, make sure your motherboard or IPMI is configured to alert on fan failure, since the fan runs at fixed 4500 RPM and the only health signal is speed drop or stop.
• This is a 50mm supplemental fan, not a primary cooler. If your chassis has a failed primary CPU fan or an undersized PSU fan, this won't compensate for that — address primary cooling first, use this for spot cooling or overall case airflow improvement.

Best fit: compact 4- to 8-channel NVR chassis or embedded security server enclosures in warm server closets where you need a reliable, low-draw supplemental fan that will outlast the recording system's typical service interval without maintenance attention.