Po490 Vietnam Rice Noodle is a Vietnamese restaurant in the Gangnam Station underground shopping arcade in Gangnam, Seoul, selling pho, fried rice, and bun cha. Ordering, payment, and food pickup are self-service, and you get the broth, pickled radish, kimchi, and sauces yourself. The pho comes out within one to two minutes of ordering, which suits a quick meal. Staff responses are brusque and the store is loud inside.