GuruPlug

GuruPlug is a compact and low power plug computer running Linux. It is intended to be a device that could act as a web server, a print server or any other network service. It has local storage in NAND Flash, but also offers USB ports and a Serial ATA port to connect external hard disks.[1]

GuruPlug

A GuruPlug in a wall socket
Manufacturer	Marvell
Type	Plug computer
Release date	2010 (2010)
Operating system	Debian
CPU	1.2 GHz ARM Marvell Kirkwood 6281 (ARM9E)
Memory	512 MB SDRAM, 512 MB NAND
Storage	External hard drive/flash disk/internal NAND
Display	none
Connectivity	USB 2.0, Gigabit Ethernet, JTAG, Bluetooth 2.1, Wi-Fi 802.11 b/g
Dimensions	95 x 65 x 48.5 (mm)
Predecessor	SheevaPlug
Successor	DreamPlug

The first versions of the GuruPlug Plus had no moving parts such as fans. Combined with the low power ARM architecture CPU, this results in both power consumption and noise level being typically lower compared to desktop PCs. However, these units had significant heating issues and were prone to overheating (the lack of a temperature sensor could form a safety issue when the unit is left running for multiple days).[2][3] Newer versions of the GuruPlug Plus manage the overheating problem by adding a 2-cm fan to the design, although this eliminates the benefit of the silent design.[4] The fan is not software-controllable[5] and makes a sound resembling that of a hair dryer.[4] The standard version of GuruPlug still has no fan and thus produces no noise.

In the area of small and low-power computing, SheevaPlug was its predecessor.