Thumbdrives are designed to work in a standard USB port, so there shouldn’t be any exceptions for USB 3.0.įrom what I can tell there’s no PCI-e 1x slot in your target machine. The reason for the external power to hardrives is that they are often designed to use more power than the USB spec allows so they come with an AC adapter (or a double headed cable) to draw from. In fact, many people run without it connected.
Thanks for your post regarding PCI-e USB3.0 card and your HP ML 110 G5 Server.įirst, the good news… even though our PCI-e USB 3.0 card has a molex connector to connect to the power supply, we’ve never run across a case where it’s necessary. Thanks for the additional info, let me know what you find, The PCI-e bus is able to provide enough power to the card to cover the 900mA per port so I suspect the Tape Drive unit is pulling more than this ammount.Ĭan you say which operating system you have and which power supplies your Power Edge Servers have? You maybe able to use a splitter on your power connectors to get power to the card, but it’s not likely to stop the over current messages. Make sure you are using a USB 3.0 cable, as a 2.0 cable will cause the system to negotiate down to the USB 2.0 spec and the OS will then expect 500mA, max. USB 3.0 allows 900mA per port and a self powered device shouldn’t be pulling more than that.
We haven’t seen an issue like this or USB 3.0 tape drives in the past so working in parallel with the Tape Drive manufacturer may be useful. It’s unusual for a device to trigger over current messages on our PCI-e card, especially when it’s self powered. Still, it's pretty fast and enough for me.Thanks for posting your question, we’ll be happy to help. I do not understand why speeds of 5 Gigabits/sec (equivalent to 625 Megabytes/sec) are claimed for this device as in reality the speeds are about one tenth of this "theoretical maximum". I hope this is of use to people who are contemplating buying this. Unless I have miscalculated somewhere with all the megas and bits and bytes, the real transfer speed of the USB3 connections is maybe twice that of the USB2 and almost as good as the eSATA speed and really not all that different to internal SATA transfer speeds. USB3: 332 sec 55.9 MB/sec USB2: 600 sec 30.9 MB/sec eSATA (via an eSATA PCI card): 295 sec 62.9 MB/sec Firewire (1394b): 316 sec 58.7 MB/secĪll this compared to copying the same folder from one internal SATA disk to another internal SATA disk took 236 sec (78.6 MB/sec) I did some speed tests using the following:Ĭopying a folder of size 18.56 Gigabytes (18,552 Megabytes) containing 2358 items from an internal SATA disk (Western Digital Black 2Tb (WDC WD2002FAEX-007BA0 Media) to a Seagate Barracuda 160 Gb (7200.10) naked SATA disk mounted in an external NewerTech VoyagerQ Quad Interface external disk dock using the following connections with the following results for time taken in seconds and speed in MegaBytes per second: (yes, I did use a USB3 cable and you can calculate the speed yourself using the times). Verified Buyer Reviewer: Anonymous Location: Sydney, Australia Experience Level: Home User Owned Product: less than a month Rating: 4/5 SPEED is of the essence OctoI installed this USB3 PCI card in my MacPro 5,1 (OSX 10.8.5) without any trouble. A better-shielded, or a shorter, or a longer USB 3.0 cable may solve the issue.Ĥ) Relocate the hard drive to the opposite side of the computer.ĥ) For the technically inclined, the intel white paper has additional ideas.
#USB 3.0 PCI EXPRESS CARD INSTALLATION BLUETOOTH#
You should be able to use any Macintosh-compatible bluetooth adapter.Ģ) Select a different hard drive case with better shielding.ģ) You may try different USB 3.0 cables. Sonnet has successfully tested this solution with an IOGear Model GBU421WM USB to Bluetooth adapter. There are several possible solutions:ġ) Purchase a USB bluetooth dongle to replace internal bluetooth, connect it via a USB extension cable, and locate it away from the USB 3.0 storage unit. USB 3.0 is known to cause radio frequency interference on 2.4 GHz wireless devices. Unfortunately, this can be a common issue with USB3 and Bluetooth. Hello! I'm very sorry to hear about any issues with the Sonnet Allegro. Response from OWC, Call Center February 5, 2018