Plummer has four interceptions and no touchdowns in Denver's first two games, but Shanahan said he has no plans on making a change at quarterback.
"It's great for talk radio and it's great for TV, but Jake has won a lot of games," Shanahan said. "Just because we started out a little slow, just like we did last year, doesn't mean it's the end of the world."
Shanahan admitted he ran a conservative game plan against Kansas City, a reaction to a five-turnover game by his offense in Week 1. Plummer had four of those turnovers.
But Shanahan said he still had confidence in Plummer. He didn't know why Plummer has started slow each of the past two seasons -- he had three interceptions and one touchdown through two games last year -- but he figured he would turn it around.
Plummer went eight games without an interception after his slow start last year.
"Jake has proven he can play at a certain level, so let's get behind him and hopefully do that," Shanahan said.
Shanahan said the entire offense, which has 19 points in two games, is doing some good things and is close to getting back on track.
"It's little things, it's not big things," Shanahan said.
--The Broncos agreed to a contract with receiver Quincy Morgan. Morgan will provide depth at receiver, but his most immediate impact will probably be in the return game. Morgan averaged 25.3 yards per kickoff return on 23 attempts last year for Pittsburgh.
The Broncos have been searching for a kickoff returner since the start of training camp. They used running back Cedric Cobbs on returns Sunday. Cobbs muffed the opening kickoff of overtime and was lucky to recover before Kansas City did.
Morgan's agent Brian Overstreet said Morgan is in shape and could play this week.
"He'll be ready," Overstreet said.
--Broncos coach Mike Shanahan said he thinks Rod Smith will be ready to play against New England. Smith suffered a concussion against Kansas City and will have more tests done, but the initial prognosis is he shouldn't miss any time.
"Right now he's probable," Shanahan said.
PLAYER PERSONNEL NOTES
--RB Cedric Cobbs has a sprained right ankle. He said Denver's training staff is optimistic he can return quickly, but he was walking on crutches Monday morning.
--RB Cecil Sapp might be asked to fill in if needed at tailback this week. Sapp, who has converted to fullback, was a tailback in college. The Broncos might be without third-string tailback Cedric Cobbs, who has a sprained ankle.
--WR Charlie Adams was released when the Broncos signed Quincy Morgan. Adams' value to the team was as a backup punt and kickoff returner. Morgan will take over kickoff returns and the team might evaluate him as a punt returner, even though he has never done it.
--DE Patrick Chukwurah had a sack in the season opener and a half a sack against Kansas City in Week 2. He is a converted linebacker whose speed helps him get around many tackles.
--CB Darrent Williams was an effective kickoff returner in college,
but Mike Shanahan is hesitant to have him return kicks in the pros.
Williams starts on defense and returns punts, and Shanahan doesn't want to
risk Williams for further injury.
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