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Kevin V.

Kevin V.

Joined on 12/14/09

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Product Reviews
product reviews
  • 3
Most Favorable Review

It's a 10-port USB Hub

Rosewill RHB-500 10-Port High Speed USB 2.0 Hub
Rosewill RHB-500 10-Port High Speed USB 2.0 Hub

Pros: This hub has worked flawlessly for me for 6 months. I use this product with a Macbook Pro, which has only 2 USB ports. That's not enough. This is a 10-port hub. There are more than enough ports for my keyboard, mouse, external hard drive, backup/archival hard drive, USB Flash drive, iPod, and embedded systems development kits. It works as expected. The hub is very low-power: when all attached devices are turned off and it's just maintaining its "I'm a hub!" status, it draws 20mA, or 0.1W. Finally, one feature that's not mentioned in the writeup or other reviews is the cable management loops integrated into the sides of the device. They look like this: http://i.imgur.com/2DOAE.png Without these loops, there would be an awful mess coming from this device. With them, my always-connected devices run cleanly off behind my desk, and I've got plenty of room in front for new connections. The LEDs are visible in normal lighting, but not too bright when I'm trying to sleep.

Cons: The device is very, very light, and the rubber feet aren't soft. With the cables in the back, you can put one or maybe two cables on the opposite front corner and it will be steady. With more ports in use, the USB cables are too stiff and heavy for this lightweight unit. Other reviewers have had troubles with the power supply; I've had none but wanted to be on the safe side and therefore switched it out for an extra I had laying around. (I used the supplied PSU for a pair of speakers, and a CUI PSU for this product because it's got some pretty valuable stuff connected to it). It's a standard 2.1mm ID, 5.5mm OD, center-positive plug, and it requires 5V regulated DC power. The supplied PSU claimed to supply 4A, which is more than you probably need. They did skimp a bit - there are spots for PTC fuses, but they used 0-ohm jumpers instead, saving probably $1 or so in materials. If you don't like this, get yourself 10 of these: http://bit.ly/yvVeXR (Digikey, shortened to 1000 cha

Overall Review: The feet mentioned in the "Cons" cover up 4 Phillips #0 screws. There's a 5th screw in the middle, it's directly beneath the space between "USB" and "2.0", at the top edge of the barcode. The label peels back easily and cleanly. I removed these, revealing the PCB. It's nicely laid out, and you'll notice the 11 100uF, 16V decoupling caps - One at the input, and one at each output. This should smooth any drops which could be caused by, say, USB hard drives spinning up. It uses 3 NEC µPD720114 4-port USB hub controllers: http://www.renesas.com/products/mpumcu/usb_device/product/assp_hub/upd720114/index.jsp Interestingly, the master controller is connected to the 5th and 6th ports (which will therefore be the lowest-latency), and its remaining 2 ports are connected to the inputs of each of the other controllers, so the remaining 8 ports should have identical latencies. The L-shaped PCB has a 1.4 x 2.6 x 0.8" void, into which a weight could be inserted to stop the hub from slip

Quite fast out-of-the-box

WINTEC FileMate 16GB Mobile Professional Class 10 microSDHC Card with SDHC Adapter - Retail
WINTEC FileMate 16GB Mobile Professional Class 10 microSDHC Card with SDHC Adapter - Retail

Pros: I ran a speed test on this card the day I got it, and I got 16 MB/s write. More than fast enough to keep up with the camera shutter. That's all I wanted.

Cons: According to other reviewers, the product slows down after a while. I've got it in a microSD-USB adapter, and am testing it daily. I've got a month or so before I give it away for Christmas, and I hope to know by then. 7 days now, and it hasn't changed yet.

11/22/2011

Fast, durable drive

CORSAIR Flash Voyager 8GB USB 2.0 Flash Drive Model CMFUSB2.0-8GB
CORSAIR Flash Voyager 8GB USB 2.0 Flash Drive Model CMFUSB2.0-8GB

Pros: The drive has already survived a trip through the wash. I put the Ubuntu 10.10 ISO on it, and installation on several computers felt speedy. But that's a subjective review, and not really useful, so I ran it through Xbench, and got the following results: 4K blocks: Read: Sequential: 4.42 MB/sec Random:   3.65 MB/sec Write: Sequential: 8.42 MB/sec Random: 0.01 MB/sec 265K blocks: Read: Sequential: 27.59 MB/sec Random: 28.83 MB/sec Write: Sequential: 7.26 MB/sec Random: 0.55 MB/sec

Cons: The cap cannot be secured to the drive, it's just a rubber sleeve. Easy to loose. The keychain loop seems like it might be a little too weak. The rubber is grippy and sticky, which is a nice feel if you're carrying it, but results in the accumulation of lots of pocket lint on the drive.