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I've an Acer Veriton N2620G with Ubuntu server 13.04 (new installation)

I have some USB devices, if I try to connect on my 4x USB 2.0 ports on the back, this devices won't work. If i try to connect this devices on my front 2x USB 3.0... this devices works fine. Now how I can fix this??

# lspci
00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
#**00:14.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB xHCI Host Controller (rev 04)**
00:16.0 Communication controller: Intel Corporation 7 Series/C210 Series Chipset Family MEI Controller #1 (rev 04)
00:19.0 Ethernet controller: Intel Corporation 82579V Gigabit Network Connection (rev 04)
#**00:1a.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #2 (rev 04)**
00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 1 (rev c4)
00:1c.2 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 3 (rev c4)
#**00:1d.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #1 (rev 04)**
00:1f.0 ISA bridge: Intel Corporation 7 Series Chipset Family LPC Controller (rev 04)

00:1f.2 IDE interface: Intel Corporation 7 Series Chipset Family 4-port SATA Controller [IDE mode] (rev 04)

00:1f.3 SMBus: Intel Corporation 7 Series/C210 Series Chipset Family SMBus Controller (rev 04)

00:1f.5 IDE interface: Intel Corporation 7 Series Chipset Family 2-port SATA Controller [IDE mode] (rev 04)

01:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5209 PCI Express Card Reader (rev 01)

01:00.1 SD Host controller: Realtek Semiconductor Co., Ltd. RTS5209 PCI Express Card Reader (rev 01)

02:00.0 Network controller: Atheros Communications Inc. AR9462 Wireless Network Adapter (rev 01)

# lsusb
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub

Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub

Bus 003 Device 002: ID 1a40:0101 Terminus Technology Inc. 4-Port HUB

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub

Bus 001 Device 003: ID 04ca:3006 Lite-On Technology Corp. 

Bus 003 Device 003: ID 1a40:0101 Terminus Technology Inc. 4-Port HUB

Bus 003 Device 004: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB

Bus 003 Device 005: ID 1a40:0101 Terminus Technology Inc. 4-Port HUB

Bus 003 Device 006: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB

Bus 003 Device 008: ID 045e:0770 Microsoft Corp. 

Bus 003 Device 009: ID 045e:0770 Microsoft Corp. 

Bus 003 Device 010: ID 045e:0766 Microsoft Corp. 

Bus 003 Device 007: ID 1a40:0101 Terminus Technology Inc. 4-Port HUB
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More interesting than lspci is lsusb, please add lsusb to your question, also, it could be that those devices are only USB 3.0 compatible. –  Braiam Aug 15 '13 at 11:59
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