UMAX Astra 4900
USB
0x06DC
0x0020
RTS8822-01
Probably similar to UMAX Astra 4600.
<device descriptor of 0x06dc/0x0020 at 001:004 (F.I.T. USB Scanner)>
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x06DC
idProduct 0x0020
bcdDevice 1.00
iManufacturer 1 (F.I.T.)
iProduct 2 (USB Scanner)
iSerialNumber 3 (RTS8822-01)
bNumConfigurations 1
<configuration 0>
bLength 9
bDescriptorType 2
wTotalLength 39
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 4 (USB SCANNER)
bmAttributes 224 (Self-poweredRemote Wakeup)
MaxPower 2 mA
<interface 0>
<altsetting 0>
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 3
bInterfaceClass 255
bInterfaceSubClass 0
bInterfaceProtocol 255
iInterface 5 (Bulk-In, Bulk-Out, Interrupt Interface)
<endpoint 0>
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 (in 0x01)
bmAttributes 2 (bulk)
wMaxPacketSize 512
bInterval 0 ms
bRefresh 0
bSynchAddress 0
<endpoint 1>
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 (out 0x02)
bmAttributes 2 (bulk)
wMaxPacketSize 512
bInterval 0 ms
bRefresh 0
bSynchAddress 0
<endpoint 2>
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 (in 0x03)
bmAttributes 3 (interrupt)
wMaxPacketSize 1
bInterval 12 ms
bRefresh 0
bSynchAddress 0
<trying to find out which USB chip is used>
checking for GT-6801 ...
this is not a GT-6801 (bDeviceClass = 0)
checking for GT-6816 ...
this is not a GT-6816 (bcdUSB = 0x200)
checking for GT-8911 ...
this is not a GT-8911 (check 2, bcdUSB = 0x200)
checking for MA-1017 ...
this is not a MA-1017 (bDeviceClass = 0, bInterfaceClass = 255)
checking for MA-1015 ...
this is not a MA-1015 (bDeviceClass = 0)
checking for MA-1509 ...
this is not a MA-1509 (bDeviceClass = 0)
checking for LM983[1,2,3] ...
this is not a LM983x (bcdUSB = 0x200)
checking for GL646 ...
this is not a GL646 (bDeviceClass = 0, bInterfaceClass = 255)
checking for GL646_HP ...
this is not a GL646_HP (bDeviceClass = 0, bInterfaceClass = 255)
checking for GL660+GL646 ...
this is not a GL660+GL646 (bDeviceClass = 0, bInterfaceClass = 255)
checking for GL841 ...
this is not a GL841 (bDeviceClass = 0, bInterfaceClass = 255)
checking for ICM532B ...
this is not a ICM532B (check 1, bDeviceClass = 0, bInterfaceClass = 255)
checking for PV8630/LM9830 ...
this is not a PV8630/LM9830 (bcdUSB = 0x200)
checking for M011 ...
this is not a M011 (bDeviceClass = 0)
checking for RTS8822L-01H ...
<This USB chip looks like a RTS8822L-01H (result from sane-backends 1.0.18)>
found USB scanner (vendor=0x06dc [F.I.T.], product=0x0020 [USB Scanner], chip=RTS8822L-01H) at libusb:001:004
If anything is wrong or missing on this page please file a bug report or use the the form for adding an unsupported device.
If you own an unsupported scanner, please send as much information as possible. Especially the output of sane-find-scanner -v -v and/or cat /proc/scsi/scsi (for SCSI scanners) or cat /proc/bus/usb/devices (for USB scanners) can help. If you dare to open the scanner, have a look at the text that's printed on the chips. That may help to identify the chipset. If you know that the scanner is similar to another one (e.g. supported by the same Windows driver), please also mention this fact.
Are you a manufacturer or vendor of scanners and one of your scanners is not supported by SANE yet? In this case please have a look at our information for manufacturers.