The Poseidon USB Stack is a software solution that unleashes the possibilities of the Universal Serial Bus (USB) and the devices with USB interface, ranging from mice, keyboards, tablets, joysticks, printers, scanners, webcams, digicams, flash card readers, zip drives, floppy disk drives, harddisks, memory sticks, ethernet adapters, scanners and audio adapters to less common things like power supplies, GPS location devices or finger print readers.  It is intended to be a solution for all systems, but the info provided on this page however, is for the classic range of Amiga computers (including compatibles).
 
Poseidon requires an Amiga with Kickstart 3.0 and 68020 processor as minimum.
 
 

Chris Hodges, who is the creator of Poseidon has taken down his website, so it's no longer possible to download it from there.  Instead you can find some links to the stack and other related files below. Have in mind that in most cases, you should just simply download Poseidon 4.5 + one of the Driver packs (if needed). You may also need the MUI (MagicUserInterface) package as well.
 
   Main archives  
PoseidonV4.lha  - Poseidon USB Stack Update 4.5  (with RapidRoad drivers only)
PoseidonV4.lha  - Poseidon USB Stack Update 4.5  (with RapidRoad drivers only)
PoseidonV4.lha  - Poseidon USB Stack Update 4.4  (Algor, Deneb, Highway & Subway drivers)
PoseidonMain.lha  - Poseidon USB Stack Update 2.2  (Algor, Highway & Subway drivers)
 
   Drivers  
PoseidonDrivers.lha  - Driver pack for the USB stack, with 11 drivers and extras  *
PoseidonDrivers-adf.lha  - Driver pack for the USB stack, with 11 drivers and extras (disk version)  *
psdhcd10.lha  - Thylacine USB card driver for the Poseidon stack
ArakAttack.lha  - USB Driver for Amithlon & OpenPCI (v1.23)
 
   Other  
mui38usr.lha  - MagicUserInterface 3.8, user files  (required for standard install of Poseidon)
PoseidonScripts.lha  - Alternative ways of using the USB stack
 
 
*  The PoseidonDrivers pack contains Algor, Deneb, Highway, RapidRoad, Subway & Thylacine drivers. It also includes MiniPoseidon and PoseidonScripts as well. More info can be found at: http://rhz1.com/miscstuff/poseidondrivers.htm