4KEX100-KVM

I bought this product so I could access my PC from a different room using a wireless USB keyboard/mouse and TV via HDMI cable. My home network is setup using Cat 5e ethernet cabling and the initial setup was simple and quick. However, after a a few weeks I started noticing that my connection would occasionally drop-out; affecting both USB and HDMI. I then upgraded to a powered USB hub feeding into the USB host on the transmitter unit. While this initially appeared to help stabilise the issue, I have had continual intermittent disconnections over the past 12-18 months. Subsequent testing using various cables and non-wireless USB keyboards etc led me to believe it is the unit, not my other components, causing the issues. This now requires me having to get up and reset the unit after every 1-2 hours. Given both the high cost of this unit and now more regular intermittent connection problems I am experiencing, I cannot recommend this unit for someone like me, who wants to connect a USB keyboard and HDMI from a remote PC. Of note, the unit disconnected again during the time it has taken me to write this short review. This is a pity, as this was exactly what I was looking for and the original reviews all seemed very positive. I hope I've just been unlucky.

I remodelled my house >20 years ago and installed Cat 5e throughout. These days, I maintain a centralised whole house server that resides in my attic and runs several workstation grade VMs that connect to screen/keyboard/mouse throughout the house. Mostly, these locations are accessible from the server via HDMI/USB runs, but there's one location that is too far and inaccessible. Fortunately, there's a network outlet there and I use the 4KEX100-KVM to pass 2560x1600 60Hz video, USB and audio from the central system to this location. The capabilities and flexibility of this unit are outstanding. It even withstands Displayport=>HDMI conversion on the Tx side and HDMI=>Displayport conversion on the Rx side. And with 4 usb sockets available on the receiver, it coves all the bases. And the fact that it does it over a 20 year old network infrastructure is even more outstanding. However, there are two issues to be aware of: 1. I cannot plug my USB soundsticks into the receiver for audio. It seems that the Rx unit does not provide enough power, but even with a powered hub added to the setup, they still don't work. Keyboard, mouse and printer all work fine. Power-hungry speakers do not. 2. More seriously, it seems that the Tx unit feeds +5V back to the host adapter over USB. Some motherboards, (including my ASRock Taichi X399) will refuse to post in such circumstances, forcing me to unplug the USB cable from the transmitter until the OS begins booting. The solution is, thankfully, simple: place a basic USB hub in-line between the host adapter and transmitter unit. This filters out the +5V and allows the system to boot normally.

The HDMI over Ethernet works perfectly for VR, but the USB does not.. I have hard-wired CAT6a ethernet in my house, so i patched the cables from my study where my gaming PC is to my living room. The total distance is probably ~25m. I tested it first by streaming it to my TV directly, which has excellent results. There is no apparent quality drop and no noticable lag whatsoever. Onto the VR Test: Is spent a few hours trying to get this to work with the VR. I noticed that the HDMI connection seemed to be perfectly fine, but the devices seemed to have intermittent connectivity issues. Sometimes the controllers would connect, sometimes it wouldn't. I actually managed to get everything working at one point for about 30 seconds before it cut out. The problem is that the USB extension is a USB hub. The Vive Hub is also, effectively, a USB hub. Therefore they weren't playing ball. Luckily I had multiple Ethernet ports available to me, so I tried this: https://www.amazon.co.uk/gp/product/B00ENH9CSC/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1 Sure enough with a direct USB oveer ethernet connection the USB issues were resolved, and I've played for many many hours now of uninterruted, smooth gaming with the HTC Vive VR Headset. All the while with my Gaming PC up in the study and the VR equipment hooked up into the living room. I decided to keep this rather than returning it for HDMI only since it allows me to connect other devices to the PC upstairs, such as additional game controllers. But if you're not planning to do that you can probably get the HDMI-only version. It would be great if this KVM extender had a "Direct" USB port in addition to the USB "Hub" to allow it to support devices like the HTC Vive. Otherwise though, this is an excellent product.

Acheté pour jouer à des jeux et utiliser mon ordinateur comme source vidéo sur ma télé 165 cm en 4k ( 4096 * 2160) 60Hz ou (1920 * 1080) en 120Hz qui est dans le salon, j'ai pu brancher un casque Jabra sans fils, l'adaptateur Bluetooth de ma manette d'Xbox, un adaptateur Bluetooth qui gère le clavier + la souris + un chargeur de pile et ça ne pose aucun problème. Connecté avec un câble Ethernet de CAT7 de 50M ( Pour test), Aucune latence, juste parfois mais vraiment très rarement une petite ligne sur l'écran que j'ai à peine le temps de voir. Parfois il y a des coupure net mais je ne sais pas si ça viens de l'appareil, plus rien ne fonctionne à par l'image, je dois rebrancher le câble Ethernet, ça m'est arrivé deux fois en 4 jours, mais j'étais continuellement sur l'équipement, et je pense que ça peux peut-être venir de mon ordinateur car je le pousse dans ses limites. Mais sinon le produit est top j'en suis très satisfait, ça fonctionne directement sans installer de pilotes. Mise à jour 16/04/2024 : les coupures étaient liée à mon onduleur sur lequel était branché le KVM, donc maintenant je n'ai plus aucune latence tout fonctionne parfaitement.

Nach 1,5 Jahren starker Nutzung kann ich sagen dass es kein vergleichbares Gerät in der Preisklasse gibt. USB ist zwar manchmal ein Bisschen tricky, ich betreibe aber auch einen zusätzlichen "powered" USB Hub ohne Probleme daran. Alle paar Monate hängt sich das Gerät auf, was aber nicht unbedingt die Ursache des Geräts ist. Dann hilft einfach den Receiver kurz vom Netz zu trennen und wieder anzuschließen. Zum Vergleich habe ich USB Extender von einem anderen Hersteller bei denen alleine der USB Teil das dreifache kostet und die machen auch nicht viel besser. Was den HDMI Teil betrifft, betreibe einen Monitor mit WQHD Auflösung (2560x1440) und 60 Hz daran. Also von meiner Seite gibt es eine klare Kaufempfehlung, werde mir demnächst eine 2te Box bestellen.

Titubante ho comprato questo prodotto per dismettere il pc in sala, inizialmente ho avuto problemi con i cavi HDMI in quanto non supportavano il 4K (ho poi acquistato quelli 2.0 di amazon basics) e ho scritto una mail al supporto che mi ha risposto prontamente con le prove da fare e la configurazione migliore, i tempi di risposta son velocissimi considerando il fuso orario. Una volta impostato tutto e funzionante si è rivelato un ottimo prodotto, niente lag fra mouse e tastiera bluetooth e la risposta dello schermo remoto, riconoscimento di windows immediato e senza alcun driver da installare, audio perfetto via HDMI, anche con un cavo ethernet cat 5e, per cambiare modalità di visualizzazione fra i 3 monitor nello studio e la tv in sala basta impostare correttamente gli schermi di windows e con la combinazione tasto di windows + P si switcha fra i monitor e il monitor remoto. Non ho provato la velocità di trasferimento usb con un hard disk collegato al ricevitore ma non ritengo di averne necessità. Unica pecca, irrilevante se non influisce sulle prestazioni e ancora presto per testarla visto il periodo invernale, il calore dei dispositivi durante il loro periodo di accensione. Insomma finalmente son riuscito a dismettere un computer e collegare un monitor addizionale remoto (55" samsung 4K) al mio pc a cui erano già connessi altri 3 monitor non remoti.

Cela fait maintenant 3 ans que je m'en en 4k60hz. Il fonctionne toujours parfaitement, pas d'artefacts de compression, pas de micros coupures, pas de latence perceptible même en jeux. (Version point à point)

In genere quando si collega un dispositivo ad un PC Windows (10 Pro) avviene una fase di riconoscimento con un passaggio extra di informazioni "di servizio" tra i due che produce alla fine una configurazione in Windows più o meno ottimale. Questo non sembra avvenire se di mezzo c'è questo prodotto della AV Access, per cui conviene, prima, attaccare tutto e configurare bene senza l'extender. Poi attaccare l'extender e dimenticarsi di cambiare il setup già fatto. Ovviamente va evitato di superare per ogni porta USB il limite di corrente imposto nella guida, a meno che non si utilizzi un hub alimentato esternamente come nel mio caso in previsione di picchi imprevisti di assorbimento. Curiosamente su questo extender non funziona nemmeno la mia scheda audio usb (Mobile Pre). Nota di demerito sul microfono: NON funzuiona affatto, né seguendo le istruzioni del manuale nè in qualunque altra ardita configurazione mi sia venuta in mente di sperimentare. Ho dovuto sopperire tramite aggiunta di un cavo dedicato. Per il resto è ok, regge i 4K e l'audio è prelevabile sia tramite uscita jack che via HDMI (audio sul monitor). Segnalo anche qualche rara e rapidissima mancanza di segnale video come anche la temperatura dei dispositivi piuttosto alta. Conclusione: dato il prezzo ho ritenuto comunque conveniente tenerlo ma questo prodotto va decisamente migliorato. Un ulteriore acquisto con queste limitazioni non lo rifarei.