Summary: This device does NOT deserve the "high power" label it has been given. Its WiFi power is only 14db, which is well under the 20db maximum legal power, which many cheap models surpass. I was instantly disappointed, expecting to get amazing range, and instead, not doing any better than my existing dirt cheap AP.
Reliable Wireless Router with HotSpot Capabilities. Limited DD-WRT Features
6 December 2012
Summary: This is an excellent router. Why waste time trying to flash a router to DD-WRT when Buffalo has the DD-WRT firmware built into their routers? I highly recommend purchasing Buffalo routers for your wireless networking. They are more secure, because they incorporate DD-WRT firmware. The amenities, such as Wi-Fi hotspots and frequency boosts are well worth the $65.00 I spent on this item. I did find two downfalls to this specific router.
Summary: Buffalo usually makes rock solid gear that is the best bang for the buck. However, this particular model has a fairly major bug that they won't consider as a defect. If you customize the settings too much, the router stops routing. The device itself can get out to the net, but wired and wireless devices behind it can't. I haven't nailed down the specific setting that breaks it yet, but it pops up after the DHCP IP range is customized and ssh is enabled.
Summary: I read all of the bad reviews on this and thought I'd be able to work through all of the known issues that Buffalo has yet to address. Boy, was I wrong. I'll spare you the details and review the problems. Problem #1: Wireless LAN randomly locks up requiring router reboot. Problem #2: Linux computer loses wired connection requiring router reboot.
Summary: This product (N300) demonstrates the infuriating combination of excellent hardware crippled by poor software. Those old enough to remember Byte magazine may recall the phrase "Infuriatingly Excellent" which was coined by Jerry Pournelle to describe such items. If you are looking for a new router with wireless this is a good place to begin as setup for this scenario is straightforward. Just plug in, use the Set Up CD, and enjoy.
Router works only if you upgrade to DD-WRT firmware
28 May 2012
Summary: The DD-WRT (Professional) firmware V24-SP2 build 19152 for the WHR-HP-G300N that comes from Buffalo's website does not hold a wireless signal. After much frustration, I finally upgraded the firmware to the latest DD-WRT firmware at DD-WRT's website and it resolved all my problems. It seems that Buffalo doesn't put a lot of effort to work on their Professional DD-WRT firmwares. You should use the firmware on the DD-WRT website instead.
Summary: I bought two of these to try to boost the range and speed of the wifi in my house, which was an old Linksys WRT54G 54 megabit 802.11g in the basement (where the cablemodem worked best) but actual speeds upstairs in the living room, at the other end of the house were more like 10 megabit on a good day, and there was no signal at all outside on the back deck (truly tragic!