Minuteman UPS ETR550LG

Overview

The Minuteman UPS ETR550LG is a line-interactive mini tower uninterruptible power supply designed to protect your essential electronics from power interruptions and voltage fluctuations. Delivering 550VA/330W of power, it supports small to medium-load devices such as gaming consoles, workstations, and network equipment. With up to 13.7 minutes of runtime at half load, it provides enough time to save your work or safely shut down connected devices during outages.

This UPS features eight outlets, four of which offer battery backup and surge protection, while the other four provide surge protection only. Its built-in Automatic Voltage Regulation (AVR) stabilizes voltage during brownouts and spikes, ensuring consistent power delivery. The unit also includes network and coaxial surge protection to guard against power surges transmitted through data and cable lines.

Key features

• Provides reliable battery backup and surge protection for critical devices through four dedicated outlets
• Additional four outlets offer surge protection for less critical equipment, maximizing connectivity
• Automatic Voltage Regulation maintains stable voltage levels during power fluctuations without switching to battery
• Tool-less battery access simplifies maintenance and replacement, reducing downtime
• Network and coaxial surge protection safeguard connected data and cable lines from voltage spikes
• Energy Star certification ensures energy-efficient operation, reducing electricity costs
• RoHS compliance reflects environmentally responsible manufacturing standards
• Includes SentryHD software for real-time monitoring and management of UPS status from your computer
• Backed by a 3-year limited warranty on electronics and a 2-year warranty on the battery for dependable support

Key specs

• Power capacity: 550VA / 330W
• Outlets: 8 total (4 battery backup with surge protection, 4 surge protection only)
• Runtime at half load: up to 13.7 minutes
• Voltage regulation: Automatic Voltage Regulation (AVR)
• Surge protection: Network and coaxial line protection included
• Certifications: Energy Star, RoHS compliant
• Warranty: 3 years limited on electronics, 2 years on battery

Connectivity and compatibility

This UPS supports a variety of devices commonly found in home offices and small business environments. The combination of battery-backed and surge-only outlets allows you to prioritize critical equipment such as computers, routers, and gaming consoles while still protecting peripherals like printers or monitors. Network and coaxial surge protection extend safeguarding to your internet and cable connections, helping maintain uninterrupted data flow and signal quality.

Installation and setup

Setting up the Minuteman UPS ETR550LG is straightforward, with a compact mini tower design that fits easily on or under desks. The tool-less battery access panel allows quick battery replacement without the need for tools, minimizing maintenance effort. The included SentryHD software provides an intuitive interface for monitoring battery status, load levels, and power events, helping you manage your power protection proactively.

Ideal uses and environments

This UPS is well suited to home offices, small businesses, and gaming setups where stable power is essential to protect sensitive electronics. It works well in environments prone to power fluctuations or occasional outages, providing enough runtime to save work and shut down devices safely. Its combination of surge protection and battery backup outlets makes it a flexible choice for mixed device setups requiring different levels of power protection.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

Learn more

Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, with tags, manuals, accessories, and original, unaltered packaging. Any item kept will be deducted from the refund. Start a return by sending us an email. Items sent back without approval may be refused or returned to the sender.

Some items are not returnable: opened TVs/combos/monitors 37″+, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method; allow 5–7 business days for the credit to post. Shipping, handling, customs duties, and import taxes are nonrefundable. If an item is used, incomplete, or not in original condition, a 30% restocking fee may apply. Direct exchanges are not offered; purchase the replacement and return the original for a refund.

We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

Learn more