FutureBit’s Apollo III Full Node goes on sale Friday at four Micro Center stores, marking the first time customers can walk into a retail shop and carry out one of the Brooklyn company’s bitcoin miners.

The compact home miner, which also runs a full bitcoin node, will be available at the Micro Center locations in Brooklyn, Miami, Tustin, California, and Austin, Texas, starting Friday, FutureBit said in a release. The four-store launch coincides with the grand opening of Micro Center’s new Austin store, the chain’s 31st U.S. location and its third in Texas. A full node stores and verifies bitcoin’s entire transaction ledger on its own hardware, letting its operator confirm payments without relying on a third-party server.

Customers can also reserve a unit online for in-store pickup. FutureBit did not disclose how many units each store will carry or what Micro Center is charging for them.

Until now, buyers in North America had to order the machine from FutureBit’s website, where the company says units are in stock and ship in two to three days. Placing the device on a computer-store shelf lets a customer examine the hardware, ask how it works and take it home the same day.

“When we started FutureBit, we made weekly trips to the DIY electronics section at the Brooklyn Micro Center to buy parts,” said John Stefanopoulos, founder of FutureBit. “On Friday, someone can walk into that same store, ask how Bitcoin mining works and take home a miner we designed just down the street. We couldn’t be more excited to work with Micro Center on our first physical store launch.”

A 6-inch miner that also runs a full node

FutureBit’s own shop lists the Apollo III Full Node at $1,099.99 without a storage drive, $1,299.99 with 1 terabyte of SSD storage and $1,399.99 with 2 terabytes. A cheaper, miner-only “Standard” model starts at $899.99 but does not include the full node.

The Full Node is rated at up to 18 terahashes per second in Turbo mode at about 325 watts. Eco mode is listed at roughly 12 TH/s and 150 watts, with noise under 35 decibels, while Super Eco mode delivers about 8 TH/s at 80 watts. Power is adjustable from 50 to 400 watts, and Turbo mode is considerably louder, at about 55 decibels. The product page notes that these power figures are measured at the board and can vary by 10%.

The unit is a 6.5-by-6.5-by-6-inch cube that weighs 6.5 pounds, carries a one-year limited warranty and is assembled in the United States. It uses new 3-nanometer American-designed chips, a custom controller and 8 GB of memory, and it includes a built-in solo mining pool, meaning the machine attempts blocks on its own and keeps the entire reward when it succeeds rather than splitting payouts. Buyers can also point the miner at a standard bitcoin mining pool. FutureBit says the full node and solo-mining features require an SSD, which is not included in the $1,099.99 configuration.

Home mining is not a profit play

Bitcoin Magazine covered the Apollo III’s debut in February, when FutureBit introduced the hardware as a way for individuals to run both a miner and a node at home. The company has long argued that the point is not to compete with industrial mines on cost.

A single Apollo III at 18 TH/s is a sliver of the bitcoin network. Bitcoin Magazine previously noted that a home-scale setup in that range still faces expected times to a solo block measured in centuries at recent difficulty. Even so, a miner running through FutureBit’s Apollo Solo setup found block 973,262 on Oct. 26 and collected the full 3.154 bitcoin reward.

FutureBit, based in Brooklyn, has built consumer mining hardware since 2015. Stefanopoulos has framed store shelves as a way to put more hash rate and more nodes in living rooms. The company did not say whether the Micro Center test will expand beyond the four stores that began selling the Apollo III on Friday.

This article first appeared on Bitcoin Magazine and is written by Micah Zimmerman.