Not yet supported (Feb 2012).
There is no support currently for this card, and since it uses a demodulator for which there is not currently a driver, much more work will be required than simply adding a new board profile.
Hauppauge UK Forums (moderator wrote this in December 2010; no news by Feb 2012):
- Hauppage don't officially support it but a number of our engineers actually work on providing linux support themselves.
Quad-mode HD TV tuner featuring DVB-S2 HDTV, DVB-S, DVB-T, FM radio, analogue PAL/SECAM aerial TV, and S-Video, Composite and stereo audio inputs for A/V capture, and additional S-Video, Composite and stereo audio (which require separate back plane plug set, not included in the box).
Also includes black IR remote control, batteries, and IR remote control receiver with plug on rear of card.
Sockets: TV, SAT, IR, Combo socket for dongle for S-Video, composite and stereo audio.
- CX23888 PCI Express Broadcast Audio/Video Decoder with 3D Comb and Analog IF Demodulator and integrated infrared.
02:00.0 Multimedia video controller: Conexant Unknown device 8880 (rev 04) Subsystem: Hauppauge computer works Inc. Unknown device c108 Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- Latency: 0, Cache Line Size: 32 bytes Interrupt: pin A routed to IRQ 16 Region 0: Memory at fda00000 (64-bit, non-prefetchable) [size=2M] Capabilities:  Express Endpoint IRQ 0 Device: Supported: MaxPayload 128 bytes, PhantFunc 0, ExtTag- Device: Latency L0s <64ns, L1 <1us Device: AtnBtn- AtnInd- PwrInd- Device: Errors: Correctable- Non-Fatal- Fatal- Unsupported- Device: RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+ Device: MaxPayload 128 bytes, MaxReadReq 512 bytes Link: Supported Speed 2.5Gb/s, Width x1, ASPM L0s L1, Port 0 Link: Latency L0s <2us, L1 <4us Link: ASPM Disabled RCB 64 bytes CommClk- ExtSynch- Link: Speed 2.5Gb/s, Width x1 Capabilities:  Power Management version 3 Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=375mA PME(D0+,D1+,D2+,D3hot+,D3cold+) Status: D0 PME-Enable- DSel=0 DScale=0 PME- Capabilities:  Vital Product Data Capabilities: [a0] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable- Address: 0000000000000000 Data: 0000
Making it Work
When this Google search returns some results, some code will then exist in linux kernel source/drivers/media/video/cx23885/cx23885-cards.c , and from then you'll have a chance of getting something going. If no results, complain to Hauppage, then buy a different card, or, wait some more, or start hacking away on the source.
Feel free to add what you know.