The following is all the information I can provide. I don't know anything about what Windows driver it uses but it may be similar to the 5510.
output of sane-find-scanner -v -v <device descriptor of 0x03f0/0xa511 at 001:003 (HP Photosmart 6510 series)> bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 0 bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 idVendor 0x03F0 idProduct 0xA511 bcdDevice 1.00 iManufacturer 1 (HP) iProduct 2 (Photosmart 6510 series) iSerialNumber 3 (CN1AR422C405RP) bNumConfigurations 1 <configuration 0> bLength 9 bDescriptorType 2 wTotalLength 108 bNumInterfaces 4 bConfigurationValue 1 iConfiguration 0 () bmAttributes 192 (Self-powered) MaxPower 2 mA <interface 0> <altsetting 0> bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 3 bInterfaceClass 255 bInterfaceSubClass 204 bInterfaceProtocol 0 iInterface 0 () <endpoint 0> bLength 7 bDescriptorType 5 bEndpointAddress 0x01 (out 0x01) bmAttributes 2 (bulk) wMaxPacketSize 512 bInterval 0 ms bRefresh 0 bSynchAddress 0 <endpoint 1> bLength 7 bDescriptorType 5 bEndpointAddress 0x82 (in 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 64 bInterval 7 ms bRefresh 0 bSynchAddress 0 <interface 1> <altsetting 0> bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 7 bInterfaceSubClass 1 bInterfaceProtocol 2 iInterface 0 () <endpoint 0> bLength 7 bDescriptorType 5 bEndpointAddress 0x08 (out 0x08) bmAttributes 2 (bulk) wMaxPacketSize 512 bInterval 0 ms bRefresh 0 bSynchAddress 0 <endpoint 1> bLength 7 bDescriptorType 5 bEndpointAddress 0x89 (in 0x09) bmAttributes 2 (bulk) wMaxPacketSize 512 bInterval 0 ms bRefresh 0 bSynchAddress 0 <interface 2> <altsetting 0> bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 8 bInterfaceSubClass 6 bInterfaceProtocol 80 iInterface 0 () <endpoint 0> bLength 7 bDescriptorType 5 bEndpointAddress 0x04 (out 0x04) bmAttributes 2 (bulk) wMaxPacketSize 512 bInterval 0 ms bRefresh 0 bSynchAddress 0 <endpoint 1> bLength 7 bDescriptorType 5 bEndpointAddress 0x85 (in 0x05) bmAttributes 2 (bulk) wMaxPacketSize 512 bInterval 0 ms bRefresh 0 bSynchAddress 0 <interface 3> <altsetting 0> bLength 9 bDescriptorType 4 bInterfaceNumber 3 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 255 bInterfaceSubClass 4 bInterfaceProtocol 1 iInterface 0 () <endpoint 0> bLength 7 bDescriptorType 5 bEndpointAddress 0x0A (out 0x0A) bmAttributes 2 (bulk) wMaxPacketSize 512 bInterval 0 ms bRefresh 0 bSynchAddress 0 <endpoint 1> bLength 7 bDescriptorType 5 bEndpointAddress 0x8B (in 0x0B) bmAttributes 2 (bulk) wMaxPacketSize 512 bInterval 0 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 GL84x ... this is not a GL84x (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 RTS8822 ... this is not a RTS8822 (bEndpointAddress = 0x1, bmAttributes = 0x2, wMaxPacketSize = 0x200, bInterval = 0x0) checking for rts8858c ... this is not a rts8858c (bcdUSB = 0x200) checking for SQ113 ... this is not a SQ113 (bInterfaceSubClass = 204) checking for HP4500C/4570C/5500C/5550C/5590/7650 chipset ... this is not a HP4500C/4570C/5500C/5550C/5590/7650 chipset (bDeviceClass = 0) checking for rts8801/rts8891 ... this is not a rts8801/rts8891 (bcdUSB = 0x200) <Couldn't determine the type of the USB chip (result from sane-backends 1.0.21)> found USB scanner (vendor=0x03f0 [HP], product=0xa511 [Photosmart 6510 series]) at libusb:001:003 <device descriptor of 0x1d6b/0x0002 at 001:001> bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 9 bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 idVendor 0x1D6B idProduct 0x0002 bcdDevice 2.06 iManufacturer 3 () iProduct 2 () iSerialNumber 1 () bNumConfigurations 1 <configuration 0> bLength 9 bDescriptorType 2 wTotalLength 25 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 () bmAttributes 224 (Self-poweredRemote Wakeup) MaxPower 0 mA <interface 0> <altsetting 0> bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 9 bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 () <endpoint 0> bLength 7 bDescriptorType 5 bEndpointAddress 0x81 (in 0x01) bmAttributes 3 (interrupt) wMaxPacketSize 4 bInterval 12 ms bRefresh 0 bSynchAddress 0 # Your USB scanner was (probably) detected. It may or may not be supported by # SANE. Try scanimage -L and read the backend's manpage. # Not checking for parallel port scanners. # Most Scanners connected to the parallel port or other proprietary ports # can't be detected by this program. # You may want to run this program as root to find all devices. Once you # found the scanner devices, be sure to adjust access permissions as # necessary. done output of cat /proc/bus/usb/devices T: Bus=01 Lev=01 Prnt=01 Port=02 Cnt=01 Dev#= 3 Spd=480 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=03f0 ProdID=a511 Rev= 1.00 S: Manufacturer=HP S: Product=Photosmart 6510 series S: SerialNumber=CN1AR422C405RP C:* #Ifs= 4 Cfg#= 1 Atr=c0 MxPwr= 2mA I:* If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=cc Prot=00 Driver=(none) E: Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=83(I) Atr=03(Int.) MxPS= 64 Ivl=8ms I:* If#= 1 Alt= 0 #EPs= 2 Cls=07(print) Sub=01 Prot=02 Driver=usblp E: Ad=08(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=89(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms I:* If#= 2 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage E: Ad=04(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=85(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms I:* If#= 3 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=04 Prot=01 Driver=(none) E: Ad=0a(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms E: Ad=8b(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms -- Kingsley Haldane Bugarin OAM Paralympian - Swimming 1984, 1988, 1992, 1996, 2000 www.kingsleybugarin.com.au