http://www.ec21.com/ec-market/ciss for hp k5400.html http://szfullcolor.en.ec21.com/K5400_H1000_Ciss_for_HP--4001568_4001579.html Product Details: 1,CISS For HP1000/1200/ 2200/2250/2230/2280/2600 /2800/1300/2000/Office jet 9110/9120/9130 2,PP mat20091213 http://cmyshow.en.ec21.com/Continuous_Bulk_Ink_Supply_System--1638985_2048701.html1, be suitable for use on hp officejet pro k5300/k5400, c4936a-c4939. 2, use specially designed cartright for CISS usin20071228 http://marrion.en.ec21.com/Ciss_for_HPK550_K5300_K5400--2665621_2674283.html 1, Continuous ink supply system bulk ink system CISS CIF for HP88 HP 88 HP Office jet Pro K550,K550dtn,K550dtwn, K850,20091102 http://azizayxd.en.ec21.com/Continuous_Ink_Systems_CISS_of--3487529_3487686.htmlfor Epson CISS, HP CISS, Canon CISS, Brother CISS, and more i make a simple list( just make some models below:): C79/C20091020 http://kenter.en.ec21.com/New_Model_CISS_Ink_Cartridge--2353007_3749018.html 1.the cartridge is suitable for Hp 10/11/88 cartridges model. 2.it can be used on Hp K5400/5300/550, Cp1700 CISS. 3.20090817 http://topjlh.en.ec21.com/CISS_for_Epson_T10_T11--2223184_3170489.html CISS system for epson T10/T20/T11 /T23/t33/TX100/102/103/200/203/300F/400/TX205 1) Offered with new version Combo chi20090730 http://alyssazhan.en.ec21.com/Printer_Continuous_Ink_Supply_System--2043685_2043694.html product name ??/span> CISS for HP 88 model: HP 88 specification??/strong> Continuous Ink Supply System 20090503