I just bought one of those chinese (apparently the same unit relabeled and being sold by multiple companies) realtek RTL8187B wifi units. The price is right.

The label name on this one is WiFySky 1500mW.

other than the fact that the case it is enclosed in is really cheesy, there is a more immediate problem with this.

the current urtw driver returns a 6.

here we go:

on insert:

ugen3.2: <vendor 0x0bda> at usbus3

after kldload if_urtw.ko:

urtw0: <vendor 0x0bda product 0x8187, class 0/0, rev 2.00/2.00, addr 2> on usbus3
urtw0: could not allocate USB transfers, err=USB_ERR_NO_PIPE
device_attach: urtw0 attach returned 6
urtw0: <vendor 0x0bda product 0x8187, class 0/0, rev 2.00/2.00, addr 2> on usbus3
urtw0: could not allocate USB transfers, err=USB_ERR_NO_PIPE
device_attach: urtw0 attach returned 6
urtw0: <vendor 0x0bda product 0x8187, class 0/0, rev 2.00/2.00, addr 2> on usbus3
urtw0: could not allocate USB transfers, err=USB_ERR_NO_PIPE
device_attach: urtw0 attach returned 6
urtw0: <vendor 0x0bda product 0x8187, class 0/0, rev 2.00/2.00, addr 2> on usbus3
urtw0: could not allocate USB transfers, err=USB_ERR_NO_PIPE
device_attach: urtw0 attach returned 6

3:28:35pm  argus(48): usbconfig -u 3 -a 2 dump_device_desc
ugen3.2: <product 0x8187 vendor 0x0bda> at usbus3, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=ON

 bLength = 0x0012
 bDescriptorType = 0x0001
 bcdUSB = 0x0200
 bDeviceClass = 0x0000
 bDeviceSubClass = 0x0000
 bDeviceProtocol = 0x0000
 bMaxPacketSize0 = 0x0040
 idVendor = 0x0bda
 idProduct = 0x8187
 bcdDevice = 0x0200
 iManufacturer = 0x0001  <Wireless Manufacturer>
 iProduct = 0x0002  <USB2.0 WLAN Adapter>
 iSerialNumber = 0x0000  <no string>
 bNumConfigurations = 0x0001

3:28:48pm  argus(49): usbconfig -u 3 -a 2 dump_curr_config_desc
ugen3.2: <product 0x8187 vendor 0x0bda> at usbus3, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=ON


Configuration index 0

   bLength = 0x0009
   bDescriptorType = 0x0002
   wTotalLength = 0x0051
   bNumInterfaces = 0x0001
   bConfigurationValue = 0x0001
   iConfiguration = 0x0004  <Wireless Network Card>
   bmAttributes = 0x0080
   bMaxPower = 0x00fa

   Interface 0
     bLength = 0x0009
     bDescriptorType = 0x0004
     bInterfaceNumber = 0x0000
     bAlternateSetting = 0x0000
     bNumEndpoints = 0x0009
     bInterfaceClass = 0x00ff
     bInterfaceSubClass = 0x00ff
     bInterfaceProtocol = 0x00ff
     iInterface = 0x0002  <USB2.0 WLAN Adapter>

    Endpoint 0
       bLength = 0x0007
       bDescriptorType = 0x0005
       bEndpointAddress = 0x0083  <IN>
       bmAttributes = 0x0002  <BULK>
       wMaxPacketSize = 0x0200
       bInterval = 0x0000
       bRefresh = 0x0000
       bSynchAddress = 0x0000

    Endpoint 1
       bLength = 0x0007
       bDescriptorType = 0x0005
       bEndpointAddress = 0x0004  <OUT>
       bmAttributes = 0x0002  <BULK>
       wMaxPacketSize = 0x0200
       bInterval = 0x0000
       bRefresh = 0x0000
       bSynchAddress = 0x0000

    Endpoint 2
       bLength = 0x0007
       bDescriptorType = 0x0005
       bEndpointAddress = 0x0005  <OUT>
       bmAttributes = 0x0002  <BULK>
       wMaxPacketSize = 0x0200
       bInterval = 0x0000
       bRefresh = 0x0000
       bSynchAddress = 0x0000

    Endpoint 3
       bLength = 0x0007
       bDescriptorType = 0x0005
       bEndpointAddress = 0x0006  <OUT>
       bmAttributes = 0x0002  <BULK>
       wMaxPacketSize = 0x0200
       bInterval = 0x0000
       bRefresh = 0x0000
       bSynchAddress = 0x0000

    Endpoint 4
       bLength = 0x0007
       bDescriptorType = 0x0005
       bEndpointAddress = 0x0007  <OUT>
       bmAttributes = 0x0002  <BULK>
       wMaxPacketSize = 0x0200
       bInterval = 0x0000
       bRefresh = 0x0000
       bSynchAddress = 0x0000

    Endpoint 5
       bLength = 0x0007
       bDescriptorType = 0x0005
       bEndpointAddress = 0x0089  <IN>
       bmAttributes = 0x0002  <BULK>
       wMaxPacketSize = 0x0200
       bInterval = 0x0000
       bRefresh = 0x0000
       bSynchAddress = 0x0000

    Endpoint 6
       bLength = 0x0007
       bDescriptorType = 0x0005
       bEndpointAddress = 0x000a  <OUT>
       bmAttributes = 0x0002  <BULK>
       wMaxPacketSize = 0x0200
       bInterval = 0x0000
       bRefresh = 0x0000
       bSynchAddress = 0x0000

    Endpoint 7
       bLength = 0x0007
       bDescriptorType = 0x0005
       bEndpointAddress = 0x000b  <OUT>
       bmAttributes = 0x0002  <BULK>
       wMaxPacketSize = 0x0200
       bInterval = 0x0000
       bRefresh = 0x0000
       bSynchAddress = 0x0000

    Endpoint 8
       bLength = 0x0007
       bDescriptorType = 0x0005
       bEndpointAddress = 0x000c  <OUT>
       bmAttributes = 0x0002  <BULK>
       wMaxPacketSize = 0x0200
       bInterval = 0x0000
       bRefresh = 0x0000
       bSynchAddress = 0x0000

If a verbose boot or any other info is needed to get this working, please tell me, and I'll get you the info.

I do have to admit, at the price these are going for, they are rather nice, and do reach out and touch a router. Review complaints: heat dissipation. If you buy one, don't operate it in a hot environment. I'd like to see it working in FreeBSD, but I don't have a handle on the wifi driver structure. Linux source code was included on the driver disk. I can email that directly to whomever needs it for comparison.


Thanks,

Jim, KC5VDJ

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